Holding a cell phone against your ear or storing it in your pocket may be dangerous to your health. This explains a warning that cell phone makers include in the small print that is often ignored when a new phone is purchased. Apple, for example, doesn’t want iPhones to come closer to you than 1.5 centimeters.
If health issues arise from cell phone use, the possible effects are huge. According to Devra Davis, an expert who has worked for the University of Pittsburgh, brain cancer is a concern. Over all, there has not been an increase in its occurrence since cell phones arrived. But the average masks an increase in brain cancer in the 20-29 age group and a drop for the older population.
“Most cancers have many causes,” she says, but she points to laboratory research that suggests low-energy radiation could damage cells that could possibly lead to cancer.
Children are more vulnerable to radiation than adults, Ms. Davis and other scientists point out. Radiation that penetrates (穿透) only five centimeters into the brain of an adult will reach much deeper into the brains of children because their skulls (头骨) are thinner and their brains contain more absorptive fluid.
Henry Lai, a research professor in the bioengineering department at the University of Washington, began laboratory radiation studies in 1980 and found that rats exposed to radiation had damaged DNA in their brains.
Ms. Davis recommends using wired headsets or the phone’s speaker. Children should text rather than call, she said, and pregnant women should keep phones away from the belly.
1.According to Ms Davis, brain cancer increases ________.
A. in the teenagers B. among old people
C. in the twenties D. among pregnant women
2.What does the underlined word “vulnerable” in the 4th paragraph probably mean?
A. accessible B. changeable
C. passive D. sensitive
3. The author’s purpose of writing the text is most likely to ________.
A. entertain B. persuade
C. describe D. inform
4.Which of the following would be the best title for the passage?
A. Low-energy Radiation Leads to Cancer
B. Cell Phone Use Brings Health Problems
C. Radiation Damages DNA in People’s Brain
D. Researchers Launched Lab Studies on Cell Phones
高三英语阅读理解中等难度题
Holding a cell phone against your ear or storing it in your pocket may be dangerous to your health. This explains a warning that cell phone makers include in the small print that is often ignored when a new phone is purchased. Apple, for example, doesn’t want iPhones to come closer to you than 1.5 centimeters.
If health issues arise from cell phone use, the possible effects are huge. According to Devra Davis, an expert who has worked for the University of Pittsburgh, brain cancer is a concern. Over all, there has not been an increase in its occurrence since cell phones arrived. But the average masks an increase in brain cancer in the 20-29 age group and a drop for the older population.
“Most cancers have many causes,” she says, but she points to laboratory research that suggests low-energy radiation could damage cells that could possibly lead to cancer.
Children are more vulnerable to radiation than adults, Ms. Davis and other scientists point out. Radiation that penetrates (穿透) only five centimeters into the brain of an adult will reach much deeper into the brains of children because their skulls (头骨) are thinner and their brains contain more absorptive fluid.
Henry Lai, a research professor in the bioengineering department at the University of Washington, began laboratory radiation studies in 1980 and found that rats exposed to radiation had damaged DNA in their brains.
Ms. Davis recommends using wired headsets or the phone’s speaker. Children should text rather than call, she said, and pregnant women should keep phones away from the belly.
1.According to Ms Davis, brain cancer increases ________.
A. in the teenagers B. among old people
C. in the twenties D. among pregnant women
2.What does the underlined word “vulnerable” in the 4th paragraph probably mean?
A. accessible B. changeable
C. passive D. sensitive
3. The author’s purpose of writing the text is most likely to ________.
A. entertain B. persuade
C. describe D. inform
4.Which of the following would be the best title for the passage?
A. Low-energy Radiation Leads to Cancer
B. Cell Phone Use Brings Health Problems
C. Radiation Damages DNA in People’s Brain
D. Researchers Launched Lab Studies on Cell Phones
高三英语阅读理解中等难度题查看答案及解析
Holding a cell phone against your ear or storing it in your pocket may be dangerous to your health. This explains a warning that cell phone manufacturers include in the small print that is often ignored when a new phone is purchased. Apple, for example, doesn’t want iPhones to come closer to you than 1.5 centimeters; Research In Motion, BlackBerry’s manufacturer, recommends 2.5 centimeters.
If health issues arise from cell phone use, the possible effects are huge. Voice calls - Americans chat on cell phones 2.26 trillion(万亿)minutes annually - earn $109 billion for the wireless carriers.
Devra Davis, an expert who has worked for the University of Pittsburgh, has published a book about cell phone radiation, “Disconnect.” The book surveys scientific research and concludes the question is not settled.
Brain cancer is a concern that Ms. Davis examines. Over all, there has not been an increase in its incidence since cell phones arrived. But the average masks an increase in brain cancer in the 20-to-29 age group and a drop for the older population.
“Most cancers have multiple causes,” she says, but she points to laboratory research that suggests low-energy radiation could damage cells that could possibly lead to cancer.
Children are more vulnerable（易受伤的）to radiation than adults, Ms. Davis and other scientists point out. Radiation that penetrates only five centimeters into the brain of an adult will reach much deeper into the brains of children because their skulls are thinner and their brains contain more absorptive fluid（易吸收的液体）. No studies have yet been completed on cell phone radiation and children, she says.
Henry Lai, a research professor in the bioengineering department at the University of Washington, began laboratory radiation studies in 1980 and found that rats exposed to radiation had damaged DNA in their brains.
Ms. Davis recommends using wired headsets or the phone’s speaker. Children should text rather than call, she said, and pregnant women should keep phones away from the abdomen（腹部）.
1.According to Ms Davis, brain cancer increase ____.
A．among children B．among old people
C．in the twenties D．among pregnant women
2.Why do children easily be affected by radiation?
A．Because they haven’t grown up.
B．Because they are too young to protect themselves.
C．Because they use cell phones more often than adults.
D．Because their skulls are thinner and their brains are easily hurt.
3.What can we conclude from the last paragraph?
A．Pregnant women should keep cell phones away.
B．People should use cell phones in the correct way.
C．If you are a child, you’d better text than make phone calls.
D．When you use a cell phone, use a wired headset or the phone’s speaker.
4.What does the passage mainly talk about?
A．Be careful when using cell phones.
B．Don’t hold your cell phone against your ear.
C．Rats exposed to radiation have damaged DNA in their brains.
D．Low-energy radiation could damage cells that could lead to cancer.
高三英语阅读理解中等难度题查看答案及解析
Holding a cell phone against your ear or stalling it in your pocket may be hazardous to your health．
This paraphrases a warning that cell phone; manufacturers include in the small print that is often tossed aside when a new phone is purchased．Apple, for example, doesn't want iP hones to come closer to you than 1．5 centimeters; Research In Motion, Blackberry's manufacturer, recommends 2.5 centimeters．
If health issues arise from cell phone use, the implications are huge．Voice calls - Americans chat on cell phones 2．26 trillion minutes annually - generate $109 billion for the wireless carriers．
Devra Davis, an epidemiologist who has worked for the University of Pittsburgh, has published a book about cell phone radiation, "Disconnect." The book surveys scientific research and concludes the question is not settled.
Brain cancer is a concern that Ms. Davis examines. Over all, there has not been an increase in its incidence since cell phones arrived. But the average masks an increase in brain cancer in the 20-to-29 age group and a drop for the older population.
"Most cancers have multiple causes," she says, but she points to laboratory research that suggests low-energy radiation could damage cells that could possibly lead to cancer.
Children are more vulnerable to radiation than adults, Ms. Davis and other scientists point out. Radiation that penetrates only five centimeters into the brain of an adult will reach much deeper into the brains of children because their skulls are thinner and their brains contain more absorptive fluid. No studies have yet been completed on cell phone radiation and children, she says.
Henry Lai, a research professor in the bioengineering department at the University of Washington, began laboratory radiation studies in 1980 and found that rats exposed to radiofrequency radiation had damaged DNA in their brains.
Ms. Davis recommends using wired headsets or the phone's speaker. Children should text rather than call, she said, and pregnant women should keep phones away from the abdomen.
1.We can infer from the passage that________．
A．Cell phone may do harm to our health if we hold it against our ear or store in our pocket
B．Devra Davis thinks that there are many factors contributing to cancer．
C．The increase in brain cancer in the young adults may have something to do with cell phone
D．Children are more likely to be affected by radiation
2.According to the passage, how could children avoid being hurt by cell phone radiation?
A．They can keep cell phones away from the abdomen．
B．They can send short massage instead of making phone calls directly．
C．They can pay more attention to the small print on the phone．
D．They should use more advanced cell phones．
3.From this passage we can learn that．________．
A．American cell phone manufacturers did not give any warning to their customers
B．American cell phone manufacturers benefit greatly from their products
C．Scientists have found the connection between brain cancer and ceil phone
D．Cell phone should be banned because of the increase in brain cancer
4.In which column can we most probably read this passage?
A．Advanced technology． B．Entertainment．
C．Science and life． D．Celebrity．
高三英语阅读理解中等难度题查看答案及解析
D
Holding a cell phone against your ear or storing it in your pocket may be dangerous to your health. This explains a warning that cell phone manufacturers include in the small print that is often ignored when a new phone is purchased. Apple, for example, doesn’t want iPhones to come closer to you than 1.5 centimeters; Research In Motion, BlackBerry’s manufacturer, recommends 2.5 centimeters.
If health issues arise from cell phone use, the possible effects are huge. Voice calls - Americans chat on cell phones 2.26 trillion(万亿)minutes annually - earn $109 billion for the wireless carriers.
Devra Davis, an expert who has worked for the University of Pittsburgh, has published a book about cell phone radiation, “Disconnect.” The book surveys scientific research and concludes the question is not settled.
Brain cancer is a concern that Ms. Davis examines. Over all, there has not been an increase in its incidence since cell phones arrived. But the average masks an increase in brain cancer in the 20-to-29 age group and a drop for the older population.
“Most cancers have multiple causes,” she says, but she points to laboratory research that suggests low-energy radiation could damage cells that could possibly lead to cancer.
Children are more vulnerable to radiation than adults, Ms. Davis and other scientists point out. Radiation that penetrates only five centimeters into the brain of an adult will reach much deeper into the brains of children because their skulls are thinner and their brains contain more absorptive fluid（易吸收的液体）. No studies have yet been completed on cell phone radiation and children, she says.
Henry Lai, a research professor in the bioengineering department at the University of Washington, began laboratory radiation studies in 1980 and found that rats exposed to radiation had damaged DNA in their brains.
Ms. Davis recommends using wired headsets or the phone’s speaker. Children should text rather than call, she said, and pregnant women should keep phones away from the abdomen（腹部）.
1.Why is the warning in the small print?
A．They think people will not care about it.
B．There is not enough space for the warning.
C．They don’t want the users to pay attention to it.
D．The warning is not important at all.
2.What does the underlined word in sixth paragraph probably mean?
A．acceptable B．valuable C．accessible D．easily affected
3.What can we conclude from the last paragraph?
A．Pregnant women should keep cell phones away.
B．People should use cell phones in the correct way.
C．If you are a child, you’d better text than make phone calls.
D．When you use a cell phone, use a wired headset or the phone’s speaker.
4.What does the passage mainly talk about?
A．Be careful when using cell phones.
B．Don’t hold your cell phone against your ear.
C．Rats exposed to radiation have damaged DNA in their brains.
D．Low-energy radiation could damage cells that could lead to cancer.
高三英语阅读理解中等难度题查看答案及解析
C
Holding a cell phone against your ear or storing it in your pocket may be dangerous to your health. This explains a warning that cell phone manufacturers include in the small print that is often ignored when a new phone is purchased. Apple, for example, doesn’t want iPhones to come closer to you than 1.5 centimeters; Research In Motion, BlackBerry’s manufacturer, recommends 2.5 centimeters.
If health issues arise from cell phone use, the possible effects are huge. Voice calls - Americans chat on cell phones 2.26 trillion(万亿)minutes annually - earn $109 billion for the wireless carriers.
Devra Davis, an expert who has worked for the University of Pittsburgh, has published a book about cell phone radiation, “Disconnect.” The book surveys scientific research and concludes the question is not settled.
Brain cancer is a concern that Ms. Davis examines. Over all, there has not been an increase in its incidence since cell phones arrived. But the average masks an increase in brain cancer in the 20-to-29 age group and a drop for the older population.
“Most cancers have multiple causes,” she says, but she points to laboratory research that suggests low-energy radiation could damage cells that could possibly lead to cancer.
Children are more vulnerable to radiation than adults, Ms. Davis and other scientists point out. Radiation that penetrates only five centimeters into the brain of an adult will reach much deeper into the brains of children because their skulls are thinner and their brains contain more absorptive fluid（易吸收的液体）. No studies have yet been completed on cell phone radiation and children, she says.
Henry Lai, a research professor in the bioengineering department at the University of Washington, began laboratory radiation studies in 1980 and found that rats exposed to radiation had damaged DNA in their brains.
Ms. Davis recommends using wired headsets or the phone’s speaker. Children should text rather than call, she said, and pregnant women should keep phones away from the abdomen（腹部）.
1.Why is the warning in the small print?
A．They think people will not care about it.
B．There is not enough space for the warning.
C．They don’t want the users to pay attention to it.
D．The warning is not important at all.
2. What does the underlined word in sixth paragraph probably mean?
A．acceptable B．valuable C．accessible D．easily affected
3.What can we conclude from the last paragraph?
A．Pregnant women should keep cell phones away.
B．People should use cell phones in the correct way.
C．If you are a child, you’d better text than make phone calls.
D．When you use a cell phone, use a wired headset or the phone’s speaker.
4. What does the passage mainly talk about?
A．Be careful when using cell phones.
B．Don’t hold your cell phone against your ear.
C．Rats exposed to radiation have damaged DNA in their brains.
D．Low-energy radiation could damage cells that could lead to cancer.
高三英语阅读理解中等难度题查看答案及解析
Cell phones: is there a cancer link?
Could your cell phone give you cancer? Whether it could or not, some people are worrying about the possibility that phones, power lines and Wi-Fi could be responsible for a range of illnesses, from rashes to brain tumors.
Some say there is evidence to support the growing anxieties. David Carpenter, a professor of environmental health sciences at the university at Albany, in New York, thinks there’s a greater than 95 percent chance that power lines can cause childhood leukemia(白血病). Also there’s a greater than 90 percent chance that cell phones can cause brain tumors. “It’s apparent now that there’s a real risk, ” said Carpenter.
But others believe these concerns are unjustified. Dr Martha Linet, the head of radiation epidemiology(流行病学) at the US National Cancer Institute, has looked at the same research as Carpenter but has reached a different conclusion. “I don’t support warning labels for cell phones, ” said Linet. “We don’t have the evidence that there’s much danger. ”
Studies so far suggest a weak connection between EMFs(电磁场) and illness— so weak that it might not exist at all. A multinational investigation of cell phones and brain cancer, in 13 countries outside the US, has been underway for several years. It’s funded in part by the European Union, in part by a cell phone industry group. The final report should come out later this year, but data so far don’t suggest a strong link between cell phone use and cancer risk.
1.From the passage we can learn that some people are worried because _______.
A. they have evidence that the use of cell phones can lead to cancer
B. they make a fuss over cell phone use
C. some experts have given a warning
D. cell phones are responsible for brain tumors
2.By saying “I don’t support warning labels for cell phones, ” Dr Martha Linet has the idea that _______.
A. the worrying is unnecessary
B. cancer-warning labels should be on cell phones
C. there is a link between cell phones and cancer
D. cell phones have nothing to do with cancer
3.Which of the following best describes the attitude of the author towards the debate?
A. Optimistic. B. Objective.
C. Opposite. D. Casual. ]
高三英语阅读理解中等难度题查看答案及解析
Before you throw that old cell phone in the trash，or hide it away in a drawer，think again. There are actually many ways to dispose(处理)of a mobile phone that you are no longer using. First，you should be aware that in many places，throwing away cell phones is actually illegal because the batteries—especially in very old phones—can contain poisonous metals. 1.
You certainly don’t need to pay to recycle an old cell phone. 2. This had led to many charities making a small amount of money by collecting old phones. There are large organizations that will take unwanted phones. However，you might also want to think locally.
3. And they do make a little bit on each donation. If you can’t find a large cell phone recycling program in your area，you might consider starting a small local one，perhaps for a local public schoo1. 4. As people move to bigger and better phones，or smaller and better phones，there are plenty of old cell phones just waiting for a place to land，and smart schools have provided that place.
You might also want to hang onto any accessories(配件)that you have. 5. Continuing to use accessories in good shape makes smart economic sense.
A.In fact，most companies that recycle them get paid to do so.
B.There are better places to get rid of them than your trash can.
C.Many schools and local charities now have recycling programs.
D.Local charities have contributed a lot in repairing unwanted phones.
E.Things like chargers or covers can often be used with your new phone.
F.The saying that one man’s trash is another man’s treasure certainly applies.
G.Check first，since so many schools have gotten the jump on recycling them already.
高三英语七选五困难题查看答案及解析
Before you throw that old cell phone in the trash, or hide it away in a drawer, think again. There are actually many ways to dispose(处理) of a mobile phone that you are no longer using. First, you should be aware that in many places, throwing away cell phones is actually illegal because the batteries - especially in very old phones - can contain poisonous metals. 1.
You certainly don't need to pay to recycle an old cell phone. 2. This had led to many charities making a small amount of money by collecting old phones. There are large organizations that will take unwanted phones. However, you might also want to think locally.
3. And they do make a little bit on each donation. If you can't find a large cell phone recycling program in your area, you might consider starting a small local one, perhaps for a local public school.4. As people move to bigger and better phones, or smaller and better phones, there are plenty of old cell phones just waiting for a place to land, and smart schools have provided that place.
You might also want to hang onto any accessories( 配件) that you have. 5. Continuing to use accessories in good shape makes smart economic sense.
A.In fact, most companies that recycle them get paid to do so.
B.There are better places to get rid of them than your trash can.
C.Many schools and local charities now have recycling programs.
D.Local charities have contributed a lot in repairing unwanted phones.
E.Things like chargers or covers can often be used with your new phone.
F.The saying that one man's trash is another man's treasure certainly applies.
G.Check first, since so many schools have gotten the jump on recycling them already.
高三英语七选五中等难度题查看答案及解析
It seems like everywhere a person goes there is at least one person with a cell phone to his ear. Even in places ________ cell phone usage is banned such as concert halls or movie theaters there is the ________ offender, or at least a few people using the text messaging feature ________ their phones.
Cell phone usage has ________ over the past decade and continues to rise. Nearly 200 ________ people in the United States have cell phones and there are ________ over one billion users worldwide. That means there are a lot of phones ________ their frequencies over the airwaves at any given time.
Concern has arisen over whether or not cell phone usage ________ harm a person’s health. Brain cancer rates in the United States have risen since call phones were ________, leading some people to wonder if cell phone usage is the reason for the ________.
Some people say the biggest danger ________ cell phones isn’t from the either real or perceived potential to develop cancer, but from ________ while using the cell phone. How many of us have seen vehicles driving ________ erratically(不稳定地) down the road. And we often see when we get near the vehicle the driver on a cell phone is ________ on a cell phone. It is a proven fact that a driver on a cell phone is ________ attentive and more likely to get in an accident. And, hands-free sets aren’t the ________ that some people may believe. Yes, they ________ both hands for driving and prevent a person from getting a sore(酸疼的) arm, ________ the driver’s mind is still ________ the conversation and therefore less attentive to what is ________ around him or her on the road.
1.A. which B. where C. there D. here
2.A. busy B. always C. occasional D. occasionally
3.A. under B. on C. from D. to
4.A. been exploded B. exploded C. been exploding D. exploding
5.A. millions B. millions of C. million D. million of
6.A. well B. good C. better D. best
7.A. delivering B. carrying C. taking D. sending
8.A. may B. must C. can D. should
9.A. allowed B. invented C. introduced D. bought
10.A. increase B. decline C. improvement D. rose
11.A. with B. before C. in D. on
12.A. attention B. attractive
C. careless D. inattentiveness
13.A. quite B. almost C. hardly D. nearly
14.A. using B. talking C. moving D. handing
15.A. more B. less C. least D. fewer
16.A. problem B. question C. mean D. answer
17.A. hold up B. pick up C. put up D. free up
18.A. therefore B. as C. but D. though
19.A. taken up B. filled by C. occupied with D. picked up
20.A. happening to B. going on C. talking about D. moving about
高三英语完形填空中等难度题查看答案及解析
________ you kept your mobile phone on in such an important exam? It’s against the school regulation．
A．How dare B．How come C．How about D．What if
高三英语单项填空简单题查看答案及解析