People are being lured(引诱) onto Facebook with the promise of a fun, free service, 1. realizing that they're paying for it by giving up plenty of personal information. Facebook then attempts to make money by selling their data to advertisers that want to send2. (target) messages.
Most Facebook users don’t realize this is happening. Even if they know what the company is up to, they still have no idea 3. they’re paying for Facebook, because people don’t really know what their personal details are worth.
The biggest problem, however, is that the company keeps changing the rules. Early on, you could keep everything private. That was the great thing about Facebook -- you could create your own little private network. Last year, the company changed its privacy rules 4. many things -- your city, your photo, your friends’ names -- were set, by default(默认), to be shared with everyone on the Internet.
According to Facebook’s vice president Elliot Schrage, the company is simply making changes to improve its service, and if people don’t share information, they have a “5. (satisfying) experience.”
Some critics think this is more about Facebook looking to make more money. Its original business model, 6. involved selling ads and putting them at the side of the page, totally failed. Who wants to look at ads when they are connecting with their friends online?
So far the privacy issue 7. (land) Facebook in hot water in Washington. In April, Senator Charles Schumer called on Facebook to change its privacy policy. He also urged the Commission to set regulations for social-networking sites.
I suspect that whatever Facebook has done 8. (invade) our privacy is only the beginning, which is why I’m considering 9. (cancel) my account. Facebook is a handy site, but I’m upset by the idea that 10. information is in the hands of people I don’t trust. That is too high a price to pay.
高三英语语法填空中等难度题
People are being lured (引诱) onto Facebook with the promise of a fun, free service without realizing they’re paying for it by giving up large amounts of personal information. Facebook then attempts to make money by selling their data to advertisers that want to send targeted messages.
Most Facebook users don’t realize this is happening. Even if they know what the company is up to, they still have no idea what they’re paying for Facebook because people don’t really know what their personal data is worth.
The biggest problem, however, is that the company keeps changing the rules. Early on, you keep everything private. That was the great thing about facebook — you could create your own little private network. Last year, the company changed its privacy rules so that many things — your city, your photo, your friends' names—were set, by default (默认) to be shared with everyone on the Internet.
According to Facebook’s vice-president Elliot Schrage, the company is simply making changes to improve its service, and if people don’t share information, they have a “less satisfying experience”.
Some critics think this is more about Facebook looking to make more money. Its original business model, which involved selling ads and putting them at the side of the page, totally failed. Who wants to look at ads when they’re online connecting with their friends?
The privacy issue has already landed Facebook in hot water in Washington. In April, Senator(议员) Charles Schumer called on Facebook to change its privacy policy. He also urged the Federal Trade Commission to set guidelines for social-networking sites. “I think the senator rightly communicated that we had not been clear about what the new products were and how people could choose to use them or not to use them,” Schrage admits.
I suspect that whatever Facebook has done so far to invade our privacy is only the beginning, which is why I’m considering deactivating(撤销) my account. Facebook is a handy site, but I’m upset by the idea that my information is in the hands of people I don’t know. That’s too high a price to pay.
1.What do we learn about Facebook from the first paragraph?
A. It is a website that sends messages to targeted users.
B. It makes money by putting on advertisements.
C. It provides loads of information to its users.
D. It profits by selling its users’ personal data.
2.Why does Facebook make changes to its rules according to Elliot Schrage?
A. To provide better service to its users.
B. To follow the Federal guidelines.
C. To improve its users’ connectivity.
D. To expand its scope of business.
3.What does Senator Charles Schumer advocate?
A. Setting guidelines for advertising on websites.
B. Banning the sharing of users’ personal information.
C. Removing ads from all social-networking sites.
D. Formulating(制订) regulations for social-networking sites..
4.Why does the author plan to cancel his Facebook account?
A. He is dissatisfied with its current service.
B. He doesn’t want his personal data abused.
C. He finds many of its users untrustworthy.
D. He is upset by its frequent rule changes.
高三英语阅读理解中等难度题查看答案及解析
People are being lured (引诱) onto Facebook with the promise of a fun, free service without realizing they’re paying for it by giving up large amounts of personal information. Facebook then attempts to make money by selling their data to advertisers that want to send targeted messages.
Most Facebook users don’t realize this is happening. Even if they know what the company is up to, they still have no idea what they’re paying for Facebook because people don’t really know what their personal data is worth.
The biggest problem, however, is that the company keeps changing the rules. Early on, you keep everything private. That was the great thing about facebook — you could create your own little private network. Last year, the company changed its privacy rules so that many things — your city, your photo, your friends' names—were set, by default (默认) to be shared with everyone on the Internet.
According to Facebook’s vice-president Elliot Schrage, the company is simply making changes to improve its service, and if people don’t share information, they have a “less satisfying experience”.
Some critics think this is more about Facebook looking to make more money. Its original business model, which involved selling ads and putting them at the side of the page, totally failed. Who wants to look at ads when they’re online connecting with their friends?
The privacy issue has already landed Facebook in hot water in Washington. In April, Senator(议员) Charles Schumer called on Facebook to change its privacy policy. He also urged the Federal Trade Commission to set guidelines for social-networking sites. “I think the senator rightly communicated that we had not been clear about what the new products were and how people could choose to use them or not to use them,” Schrage admits.
I suspect that whatever Facebook has done so far to invade our privacy is only the beginning, which is why I’m considering deactivating(撤销) my account. Facebook is a handy site, but I’m upset by the idea that my information is in the hands of people I don’t know. That’s too high a price to pay.
1.What do we learn about Facebook from the first paragraph?
A. It is a website that sends messages to targeted users.
B. It makes money by putting on advertisements.
C. It profits by selling its users’ personal data.
D. It provides loads of information to its users.
2.What does the author say about most Facebook users?
A. They are reluctant to give up their personal information.
B. They don’t know their personal data enriches Facebook.
C. They don’t identify themselves when using the website.
D. They care very little about their personal information.
3.Why does Facebook make changes to its rules according to Elliot Schrage?
A. To provide better service to its users.
B. To follow the Federal guidelines.
C. To improve its users’ connectivity.
D. To expand its scope of business.
4.What does Senator Charles Schumer advocate?
A. Setting guidelines for advertising on websites.
B. Banning the sharing of users’ personal information.
C. Formulating(制订) regulations for social-networking sites.
D. Removing ads from all social-networking sites.
5.Why does the author plan to cancel his Facebook account?
A. He is dissatisfied with its current service.
B. He finds many of its users untrustworthy.
C. He doesn’t want his personal data abused.
D. He is upset by its frequent rule changes.
高三英语阅读理解中等难度题查看答案及解析
People are being lured(引诱) onto Facebook with the promise of a fun, free service, 1. realizing that they're paying for it by giving up plenty of personal information. Facebook then attempts to make money by selling their data to advertisers that want to send2. (target) messages.
Most Facebook users don’t realize this is happening. Even if they know what the company is up to, they still have no idea 3. they’re paying for Facebook, because people don’t really know what their personal details are worth.
The biggest problem, however, is that the company keeps changing the rules. Early on, you could keep everything private. That was the great thing about Facebook -- you could create your own little private network. Last year, the company changed its privacy rules 4. many things -- your city, your photo, your friends’ names -- were set, by default(默认), to be shared with everyone on the Internet.
According to Facebook’s vice president Elliot Schrage, the company is simply making changes to improve its service, and if people don’t share information, they have a “5. (satisfying) experience.”
Some critics think this is more about Facebook looking to make more money. Its original business model, 6. involved selling ads and putting them at the side of the page, totally failed. Who wants to look at ads when they are connecting with their friends online?
So far the privacy issue 7. (land) Facebook in hot water in Washington. In April, Senator Charles Schumer called on Facebook to change its privacy policy. He also urged the Commission to set regulations for social-networking sites.
I suspect that whatever Facebook has done 8. (invade) our privacy is only the beginning, which is why I’m considering 9. (cancel) my account. Facebook is a handy site, but I’m upset by the idea that 10. information is in the hands of people I don’t trust. That is too high a price to pay.
高三英语语法填空中等难度题查看答案及解析
People are being lured (引诱）onto Facebook with the promise of a fun, free service without realizing they're paying for it by giving up their personal information. Facebook then attempts to make money by selling their data to advertisers that want to send targeted messages.
Most Facebook users don't realize this is happening. Even if they know what the company is up to, they still have no idea what they're paying for Face book because people don't really know what their personal data is worth.
The biggest problem, however, is that the company keeps changing the rules. Early on, you keep everything private. That was the great thing about facebook-you could create your own little private network. Last year, the company changed its privacy rules so that many things— your city, your photo, your friends' names—were set, by default (默认)to be shared with every one on the Internet.
According to Facebook's vice-president Elliot Schrage, the company is simply making changes to improve its service, and if people don't share information, they have a "less satisfying experience".
Some critics think this is more about Facebook looking to make more money. In original business model, which involved selling ads and putting them at the side of the pages totally. Who wants to look at ads when they're online connecting with their friends?
The privacy issue has already landed Facebook in hot water in Washington. In April. Senator Charles Schumer called on Facebook to change its privacy policy. He also urged the Federal Trade Commission to set guidelines for social-networking sites. "I think the senator rightly communicated that we had not been clear about what the new products were and how people could choose to use them or not to use them," Schrage admits.
I think that whatever Facebook has done so far to invade our privacy, it's only the beginning. That is why I'm considering deactivating (撤销）my account. Facebook is a handy site, but I'm upset by the idea that my information is in the hands of people I don't trust. That's too high a price to pay.
1.Why do people give their personal information to Facebook according to Paragraph 1?
A.Because they can get some money from Facebook.
B.Because their information is not important.
C.Because they are promised to have a fun and free service.
D.Because they can also get other people's information.
2.What does the author say about most Facebook users?
A.They are unwilling to give up their personal information.
B.They don't know their personal data enriches Facebook.
C.They don't identify themselves when using the website.
D.They care very much about their personal information.
3.Why does Facebook make changes to its rules according to Elliot Schrage?
A. To give better service to its users. B. To obey to the Federal guidelines.
C. To improve its users' connection. D. To expand its business.
4.Why does Senator Charles Schumer support publicly?
A.Setting guidelines for advertising on websites.
B.Banning the sharing of users' personal information.
C.Making regulations for social-networking sites.
D.Removing ads from all social-networking sites.
高三英语阅读理解简单题查看答案及解析
People are being lured(引诱) onto Facebook with the promise of a fun, free service without realizing they're paying for it by giving up large amounts of personal information. Facebook then attempts to make money by selling their data to advertisers that want to send targeted messages.
Most Facebook users don't realize this is happening. Even if they know what the company is up to, they still have no idea what they're paying for Facebook because people don't really know what their personal data is worth.
The biggest problem, however, is that the company keeps changing the rules. Early on, you keep everything private. That was the great thing about Facebook—you could create your own little private network. Last year, the company changed its privacy rules so that many things—your city, your photo, your friends' names—were set, by default(默认) to be shared with everyone on the Internet.
According to Facebook's vice-president Elliot Schrage, the company is simply making changes to improve its service, and if people don't share information, they have a “less satisfying experience”.
Some critics think this is more about Facebook looking to make more money. Its original business model, which involved selling ads and putting them at the side of the page, totally failed. Who wants to look at ads when they're online connecting with their friends?
The privacy issue has already landed Facebook in hot water in Washington. In April, Senator(议员) Charles Schumer called on Facebook to change its privacy policy. He also urged the Federal Trade Commission to set principles for social-networking sites. “I think the senator rightly communicated that we had not been clear about what the new products were and how people could choose to use them or not to use them，” Schrage admits.
I suspect that whatever Facebook has done so far to invade our privacy is only the beginning, which is why I'm considering deactivating (撤销) my account. Facebook is a handy site, but I'm upset by the idea that my information is in the hands of people I don't know. That's too high a price to pay.
1.What do we learn about Facebook from the first paragraph?
A. It is a website that sends messages to targeted users.
B. It makes money by putting on advertisements.
C. It profits by selling its users' personal data.
D. It provides loads of information to its users.
2.Why does Facebook make changes to its rules according to Elliot Schrage?
A. To improve its users' connectivity.
B. To follow the Federal guidelines.
C. To offer better service to its users.
D. To expand its scope of business.
3.What does Senator Charles Schumer advocate?
A. Working out regulations for social-networking sites.
B. Banning the sharing of users' personal information.
C. Removing ads from all social-networking sites.
D. Setting guidelines for advertising on websites.
4.Why does the author plan to cancel his Facebook account?
A. He is dissatisfied with its current service.
B. He doesn't want his personal data abused.
C. He finds many of its senior executives untrustworthy.
D. He is annoyed with its frequent rule changes.
高三英语阅读理解中等难度题查看答案及解析
People are being lured (引诱)onto Facebook with the promise of a fun, free service without realizing they're paying for it by giving up loads of personal information. Facebook then attempts to make money by selling their data to advertisers that want to send targeted messages.
Most Facebook users don't realize this is happening. Even if they know what the company is up to, they still have no idea what they're paying for Face book because people don't really know what their personal data is worth.
The biggest problem, however, is that the company keeps changing the rules Early on you keep everything private. That was the great thing about facebook you could create own little private network. Last year. The company changed its privacy rules so that many things your city. Your photo, your friends' names-were set, by default (默认)to be shared with every one on the Internet.
According to Facebook's vice-president Elliot Schrage, the company is simply making changes to improve its service, and if people don't share information They have a "less satisfying experience".
Some critics think this is more about Facebook looking to make more money. In original business model, which involved selling ads and putting then At the side of the pages totally Who wants to look at ads when they're online connecting with their friends?
The privacy issue has already landed Facebook in hot water in Washington. In April. Senator Charles Schumer called on Facebook to change its privacy policy. He also urged the Federal Trade Commission to set guidelines for social-networking sites."I think the senator rightly communicated that we had not been clear about what the new products were and how people could choose to use them or not to use them," Schrage admits.
I suspect that whatever Facebook has done so far to invade our privacy, it's only the beginning. Which is why I'm considering deactivating(撤销)my account. Facebook is a handy site, but I'm upset by the idea that my information is in the hands of people I don't trust. That's too high a price to pay.
1.What do we learn about Facebook from the first paragraph?
A.It is a website that sends messages to targeted users.
B.It makes money by putting on advertisements.
C.It profits by selling its users' personal data.
D.It provides loads of information to its users.
2.What does the author say about most Facebook users?
A.They are reluctant to give up their personal information.
B.They don't know their personal data enriches Facebook.
C.They don't identify themselves when using the website.
D.They care very little about their personal information.
3.Why does Facebook make changes to its rules according to Elliot Schrage?
A.To render better service to its users.
B.To conform to the Federal guidelines.
C.To improve its users' connectivity.
D.To expand its scope of business.
4.Why does Senator Charles Schumer advocate?
A.Setting guidelines for advertising on websites.
B.Banning the sharing of users' personal information.
C.Formulating regulations for social-networking sites.
D.Removing ads from all social-networking sites.
5.Why does the author plan to cancel his Facebook account?
A.He is dissatisfied with its current service.
B.He finds many of its users untrustworthy.
C.He doesn't want his personal data abused.
D.He is upset by its frequent rule changes.
高三英语阅读理解中等难度题查看答案及解析
People are being lured(引诱) onto Facebook with the promise of a fun, free service, and don’t realize that they’re paying for it by giving up loads of personal information. Facebook then attempts to make money by selling their data to advertisers that want to send targeted messages.
Most Facebook users don’t realize this is happening. Even if they know what the company is up to, they still have no idea what they’re paying for Facebook, because people don’t really know what their personal details are worth.
The biggest problem, however, is that the company keeps changing the rules. Early on, you could keep everything private. That was the great thing about Facebook—you could create your own little private network. Last year, the company changed its privacy rules so that many things—your city, your photo, your friends’ names—were set, by default（默认）, to be shared with everyone on the Internet.
According to Facebook’s vice president Elliot Schrage, the company is simply making changes to improve its service, and if people don’t share information, they have a “less satisfying experience.”
Some critics think this is more about Facebook looking to make more money. Its original business model, which involved selling ads and putting them at the side of the page, totally failed. Who wants to look at ads when they’re online connecting with their friends?
The privacy issue has already landed Facebook in hot water in Washington. In April, Senator Charles Schumer called on Facebook to change its privacy policy. He also urged the Commission to set guidelines for social-networking sites. “I think the senators rightly communicated that we had not been clear about what the new products were and how people could choose to use them or not to use them,” Schrage admits.
I suspect that whatever Facebook has done so far to invade（侵犯）our privacy, it’s only the beginning，which is why I’m considering deactivating（撤销） my account. Facebook is a handy site, but I’m upset by the idea that my information is in the hands of people I don’t trust. That is too high a price to pay.
1.What do we learn about Facebook from the first paragraph?
A. It is a website that sends messages to targeted users.
B. It makes money by putting on advertisements.
C. It earns money by selling its user’s personal data
D. It provides a lot of information to its users
2.What does the author say about most Facebook users?
A. They don’t know their personal data enriches Facebook
B. They are unwilling to give up their personal information
C. They don’t identify themselves when using website
D. They care very little about their personal information
3.Why does Facebook make changes to its rules according to Elliot Schrage?
A. To help its users make more friends
B. To obey the Federal guidelines
C. To make money by attracting more users
D. To offer better service to its users
4.What does Senator Charles Schumer argue for?
A. Setting guidelines for advertising on websites
B. Setting rules for social-networking sites
C. Stopping sharing user’s personal information
D. Removing ads from all social-networking sites
5.Why does the author plan to stop using his Facebook account?
A. He is dissatisfied with its service.
B. He finds many of its users untrustworthy.
C. He doesn’t want his personal data abused.
D. He is upset by its frequent rule changes.
高三英语阅读理解中等难度题查看答案及解析
Have you ever used Facebook? Many people are being lured (引诱) onto it with the promise of a fun, free service without realizing they’re paying for it by giving up large amounts of personal information. Facebook then attempts to make money by selling their data to advertisers that want to send targeted messages.
Most Facebook users don’t realize this is happening. Even if they know what the company is up to, they still have no idea what they’re paying for Facebook because people don’t really know what their personal data is worth.
The biggest problem, however, is that the company keeps changing the rules. Early on, you keep everything private. That was the great thing about Facebook — you could create your own little private network. Last year, the company changed its privacy rules so that many things — your city, your photo, your friends' names—were set, by default (默认) to be shared with everyone on the Internet.
According to Facebook’s vice-president Elliot Schrage, the company is simply making changes to improve its service, and if people don’t share information, they have a “less satisfying experience”.
Some critics think this is more about Facebook looking to make more money. Its original business model, which involved selling ads and putting them at the side of the page, totally failed. Who wants to look at ads when they’re online connecting with their friends?
The privacy issue has already landed Facebook in hot water in Washington. In April, Senator (议员) Charles Schumer called on Facebook to change its privacy policy. He also urged the Federal Trade Commission to set guidelines for social-networking sites. “I think the senator rightly communicated that we had not been clear about what the new products were and how people could choose to use them or not to use them,” Schrage admits.
I suspect that whatever Facebook has done so far to invade our privacy is only the beginning, which is why I’m considering deactivating (撤销) my account. Facebook is a handy site, but I’m upset by the idea that my information is in the hands of people I don’t know. That’s too high a price to pay.
1.What do we learn about Facebook from the first paragraph?
A. It is a website that sends messages to targeted users.
B. It makes money by putting on advertisements.
C. It profits by selling its users’ personal data.
D. It provides loads of information to its users.
2.What does the author say about most Facebook users?
A. They are reluctant to give up their personal information.
B. They don’t know their personal data enriches Facebook.
C. They don’t identify themselves when using the website.
D. They care very little about their personal information.
3.Why does Facebook make changes to its rules according to Elliot Schrage?
A. To provide better service to its users.
B. To follow the Federal guidelines.
C. To improve its users’ connectivity.
D. To expand its scope of business.
4.Why does the author plan to cancel his Facebook account?
A. He is dissatisfied with its current service.
B. He finds many of its users untrustworthy.
C. He doesn’t want his personal data abused.
D. He is upset by its frequent rule changes.
高三英语阅读理解中等难度题查看答案及解析
Have you ever used Facebook? Many people are being lured (引诱) onto it with the promise of a fun，free service without realizing they're paying for it by giving up large amounts of personal information．Facebook then attempts to make money by selling their data to advertisers that want to send targeted messages．
Most Facebook users don't realize this is happening．Even if they know what the company is up to，they still have no idea what they're paying for Facebook because people don't really know what their personal data is worth．
The biggest problem，however，is that the company keeps changing the rules．Early on，you keep everything private．That was the great thing about Facebook — you could create your own little private network．Last year，the company changed its privacy rules so that many things — your city，your photo，your friends' names—were set，by default (默认) to be shared with everyone on the Internet．
According to Facebook's vice-president Elliot Schrage，the company is simply making changes to improve its service，and if people don't share information，they have a “less satisfying experience”．
Some critics think this is more about Facebook looking to make more money．Its original business model，which involved selling ads and putting them at the side of the page，totally failed．Who wants to look at ads when they're online connecting with their friends?
The privacy issue has already landed Facebook in hot water in Washington．In April，Senator(议员) Charles Schumer called on Facebook to change its privacy policy．He also urged the Federal Trade Commission to set guidelines for social-networking sites．“I think the senator rightly communicated that we had not been clear about what the new products were and how people could choose to use them or not to use them，” Schrage admits．
I suspect that whatever Facebook has done so far to invade our privacy is only the beginning，which is why I'm considering deactivating(撤销) my account．Facebook is a handy site，but I'm upset by the idea that my information is in the hands of people I don't know．That's too high a price to pay．
1.What do we learn about Facebook from the first paragraph?
A． It is a website that sends messages to targeted users．
B． It makes money by putting on advertisements．
C． It profits by selling its users'personal data．
D． It provides loads of information to its users．
2.What does the author say about most Facebook users?
A． They are reluctant to give up their personal information．
B． They don't know their personal data enriches Facebook．
C． They don't identify themselves when using the website．
D． They care very little about their personal information．
3.Why does Facebook make changes to its rules according to Elliot Schrage?
A． To provide better service to its users．
B． To follow the Federal guidelines．
C． To improve its users'connectivity．
D． To expand its scope of business．
4.Why does the author plan to cancel his Facebook account?
A． He is dissatisfied with its current service．
B． He finds many of its users untrustworthy．
C． He doesn't want his personal data abused．
D． He is upset by its frequent rule changes．
高三英语阅读理解中等难度题查看答案及解析
People are being lured（引诱）onto Facebook with the promise of a fun, free service, and don’t realize that they’re paying for it by giving up loads of personal information．Facebook then attempts to make money by selling their data to advertisers that want to send targeted messages．
Most Facebook users don’t realize this is happening．Even if they know what the company is up to, they still have no idea what they’re paying for Facebook, because people don’t really know what their personal details are worth．
The biggest problem, however, is that the company keeps changing the rules．Early on, you could keep everything private．That was the great thing about Facebook—you could create your own little private network．Last year, the company changed its privacy rules so that many things—your city, your photo, your friends’ names—were set, by default（默认）, to be shared with everyone on the Internet．
According to Facebook’s vice president Elliot Schrage, the company is simply making changes to improve its service, and if people don’t share information, they have a “less satisfying experience．”
Some critics think this is more about Facebook looking to make more money．Its original business model, which involved selling ads and putting them at the side of the page, totally failed．Who wants to look at ads when they’re online connecting with their friends？
The privacy issue has already landed Facebook in hot water in Washington．In April, Senator Charles Schumer called on Facebook to change its privacy policy．He also urged the Commission to set guidelines for social-networking sites．“I think the senators rightly communicated that we had not been clear about what the new products were and how people could choose to use them or not to use them,” Schrage admits．
I suspect that whatever Facebook has done so far to invade（侵犯）our privacy, it’s only the beginning，which is why I’m considering deactivating（撤销） my account．Facebook is a handy site, but I’m upset by the idea that my information is in the hands of people I don’t trust．That is too high a price to pay．
1.What do we learn about Facebook from the first paragraph？
A．It is a website that sends messages to targeted users
B．It makes money by putting on advertisements
C．It earns money by selling its user’s personal data
D．It provides a lot of information to its users
2.What does the author say about most Facebook users？
A．They don’t know their personal data enriches Facebook
B．They are unwilling to give up their personal information
C．They don’t identify themselves when using website
D．They care very little about their personal information
3.Why does Facebook make changes to its rules according to Elliot Schrage？
A．To help its users make more friends
B．To obey the Federal guidelines
C．To make money by attracting more users
D．To offer better service to its users
4.What does Senator Charles Schumer argue for？
A．Setting guidelines for advertising on websites
B．Setting rules for social-networking sites
C．Stopping sharing user’s personal information
D．Removing ads from all social-networking sites
5.Why does the author plan to stop using his Facebook account？
A．He is dissatisfied with its service
B．He finds many of its users untrustworthy
C．He doesn’t want his personal data abused
D．He is upset by its frequent rule changes
高三英语阅读理解中等难度题查看答案及解析