Earlier on Monday, Obama's spokesman said Was...

Earlier on Monday, Obama's spokesman said Washington _________ Karzai as the legal leader of Afghanistan and would continue talks with him.

A concerned       B commanded              C rewarded               D recognized

高一英语单项填空简单题查看答案及解析

WASHINGTON, D.C. --- The FBI on Monday released new data about hate crimes. It showed that more hate crimes were carried out in the United States last year. There was an increase in incidents motivated by intolerance against Jews, Muslims and LGBT people, among others. The term LGBT includes lesbian, gay, bisexual and transgender people.

There were more than 6,100 reported incidents of hate crimes in 2016, up from more than 5,800 the year before. The FBI made this report based on data submitted by law enforcement(执行) agencies across the country. The new data follows a trend from 2015. The trend shows that the largest share of victims last year, nearly six in 10, were targeted(为目标) due to intolerance against the victim's race or ethnicity.

The number of hate crimes caused by intolerance against a person's race or ethnic background rose to 3,489 from 3,310 a year earlier, the FBI report said. Half of those hate crimes were caused by racism against African-American people. One in five victims were targeted because of their religion. One in six were due to sexual orientation, the report said.

The FBI data gains a general look at hate crime in the nation. But this report is considered incomplete because not all areas report their hate crimes. According to the FBI, 88 percent of agencies choosing to participate in the hate crime statistics program “reported that no hate crimes occurred” in their areas last year.

Speaking earlier this year after a series of threats targeting Jewish schools and community centers, former FBI director James B. Comey admitted this. He said that the bureau needs "to do a better job of tracking and reporting hate crime." Only then can we understand what is happening and how to stop it.

“Hate crime is different from other crime,” Comey said in prepared remarks delivered in May. “They damage at our sense of self, our sense of belonging. The end result is loss: loss of trust, loss of dignity, and in the worst case, loss of life.”

The FBI report, which collects information on the offenders in the hate crimes tallied(总计) last year, found that the largest share, nearly half were white. About a quarter of the people who carried out hate crimes were African-American.

Four in 10 of the people identified as “known hate crime offenders” committed simple assault. This could mean a threat of violence or causing a minor injury. Nearly a quarter committed aggravated(=serious) assault, which is more serious and often involves the use of a deadly weapon. The report also identified more than 1,600 people who committed hate crimes by damaging, vandalizing or trying to destroy property.

1.The author emphasizes the situation of hate crimes mainly by using ________.

A.examples B.statistics

C.comparison D.quotation

2.Why is hate crime different from other crimes in the article?

A.The article highlights that hate crimes are more likely to end with injuries.

B.The article emphasizes that hate crimes target people’s sense of belonging.

C.The article explains that hate crimes are tracked more often than other crimes.

D.The article shows that hate crimes occur more often in minority communities.

3.Which of the following are the results of hate crimes? ______.

①violence or injuries ②loss of dignity or life ③damage to property ④ use of deadly weapons

A.①②③④ B.②③④

C.①③④ D.①②③

4.What’s the genre of this passage?

A.News report. B.Argumentation.

C.Description. D.Research report.

高一英语阅读理解中等难度题查看答案及解析

The National Air and Space Museum in Washington, DC has thousands of objects on display, including the 1903 Wright Flyer, Charles Lindbergh’s Spirit of St. Louis, the Apollo 11 Command Module Columbia, and a lunar rock you can touch. In addition to our exhibition gallery, you may want to visit the Albert Einstein Planetarium, Lockheed Martin IMAX Theater, and the Public Observatory on the east end. There are many things to do at the Museum in DC. We offer daily tours and educational activities for both children and adults. We also have scheduled lectures and events throughout the year.

Hours and Admission: Open every day except December 25. Admission is free.

Regular Hours: 10:00 am to 5:30 pm

Extended Hours: 10:00 am to 7:30pm

December 26—30, 2014 March 30—April 20, 2015

Friday and Saturdays, April 24—May 16, 2015　 May 17—September 7, 2015

Visiting Tips: Limit the number of bags: All visitors are screened through metal detector upon entry. The fewer items you bring inside the Museum, the faster your entry. Before you visit, please review the list of prohibited items, which include pocket knives and tripods(三脚架). Visitors carrying prohibited items will not be allowed inside the Museum, so please leave them at home or in your car.

No Food or Drink: Only bottled water is permitted in the Museum. You may only consume food and other drinks in the Food and Drink Court, not in the Museum. Groups who bring food are encouraged to picnic on the National Hall.

Please Take Photos: You are welcome to take photos for personal use. However, tripods and monopods(单脚架) are not permitted without approval.

First Aid: The Museum has a First Aid office and a nurse on duty. Please contact the nearest security officer or the Welcome Center for assistance.

Visit the Welcome Center: At our Welcome Center in the South Lobby, staff and volunteers can answer any questions you have during your visit.

Open: 10:00 am to 5:30 Phone: 202-666-2212

E-mail: NASM-visitorservice@si.edu

1.According to the passage, the National Air and Space Museum is a place ________.

A. where only adults can take part in some educational activities

B. where one can touch anything he likes

C. everyone can pay a visit to without buying tickets

D. everyone can visit everyday all the year round

2.A visitor can visit the Museum at 6:00 pm, on ________.

A. December 24, 2014(Wednesday)

B. March 1, 2015(Sunday)

C. September 15, 2015(Tuesday)

D. July 6, 2015(Monday)

3.A visitor to the Museum can ________.

A. get some medical treatment if he suddenly falls ill

B. take photos with tripods for personal use

C. bring fewer bags to go through metal detectors

D. eat and drink in the Museum or in the Food Court

4.The passage probably appears in ______.

A. a lecture

B. a history textbook

C. an advertisement

D. a science report

高一英语阅读理解中等难度题查看答案及解析

The National Air and Space Museum in Washington, DC has thousands of objects on display, including the 1903 Wright Flyer, Charles Lindbergh’s Spirit of St. Louis, the Apollo 11 Command Module Columbia, and a lunar rock you can touch. In addition to our exhibition gallery, you may want to visit the Albert Einstein Planetarium, Lockheed Martin IMAX Theater, and the Public Observatory on the east end. There are many things to do at the Museum in DC. We offer daily tours and educational activities for both children and adults. We also have scheduled lectures and events throughout the year.

Hours and Admission: Open every day except December 25. Admission is free.

Regular Hours:　　 10:00 am to 5:30pm

Extended Hours:　 10:00 am to 7:30pm

December 26---30, 2014　　　　 March 30---April 20, 2015

Friday and Saturdays, April 24---May 16, 2015　 May 17---September 7, 2015

Visiting Tips: Limit the number of bags: All visitors are screened through metal detector upon entry. The fewer items you bring inside the Museum, the faster your entry. Before you visit, please review the list of prohibited items, which include pocket knives and tripods(三脚架). Visitors carrying prohibited items will not be allowed inside the Museum, so please leave them at home or in your car.

No Food or Drink: Only bottled water is permitted in the Museum. You may only consume food and other drinks in the Food and Drink Court, not in the Museum. Groups who bring food are encouraged to picnic on the National Hall.

Please Take Photos: You are welcome to take photos for personal use. However, tripods and monopods(单脚架) are not permitted without approval.

First Aid: The Museum has a First Aid office and a nurse on duty. Please contact the nearest security officer or the Welcome Center for assistance.

Visit the Welcome Center: At our Welcome Center in the South Lobby, staff and volunteers can answer any questions you have during your visit.

Open: 10:00am to 5:30　　　　 Phone: 202-666-2212

E-mail: NASM-visitorservice@si.edu

1.According to the passage, the National Air and Space Museum is a place _______.

A. where only adults can take part in some educational activities

B. where one can touch anything he likes

C. everyone can pay a visit to without buying tickets

D. everyone can visit without time limit all the year round.

2. If the Greens plan to visit the Musuem at 6:00pm, it is accessible on _______.

A. December 24, 2014(Wednesday)　　 B. March 1, 2015(Sunday)

C. September 15, 2015(Tuesday)　　　 D. July 6, 2015(Monday)

3.A visitor to the Museum can _______.

A. get some medical treatment if he suddenly falls ill

B. take photos with tripods for personal use

C. bring fewer bags to go through metal detectors

D. eat and drink in the Museum or in the Food Court

4.The purpose of this passage is to _______.

A. attract people to explore the universe

B. make an advertisement for the Museum

C. encourage adults to bring their children here

D. show what is on display in the Museum

高一英语阅读理解困难题查看答案及解析

WASHINGTON — It is announced Friday that White House visitor records will be opened up on a regular basis for the first time in modern history, providing the public an unusually detailed look at who gets the opportunity to help shape American policy at the highest levels.

“Americans have a right to know whose voices are being heard in the policymaking process,” the president said in a written statement issued by the White House while he vacationed with his family at Camp David.

By the end of the year, the White House will begin posting online every month the names of the people who visited in the last 90 to 120 days. Each person’s full name will be listed, along with the date and time they entered and left and the name of the person they visited. About 70,000 to 100,000 people visit the White House each month, and the records will include tourists as well as people conducting business.

The White House pointed out several exceptions to the policy: “purely personal guests” of the Obama family; those cases in which the disclosure(透露) of visitors’ names “would threaten national safety interests”; and those who come for “particularly sensitive meetings,” like candidates for a Supreme Court nomination(提名). Officials said only a “small number” will fit in the latter category（类别）, and their names would eventually be disclosed after they are no longer secret, like after a nomination is publicly announced. Moreover, they said, the number of undisclosed visitors will be disclosed, to make clear how few they are.

1.Why will the White House visitor records be open to the public?

A．To attract more visitors to the White House.

B．To allow people to know more about the life of the Obama family.

C．To let the public know who are influencing the policies.

D．To ask the public help correct the policies made by the government.

2.From the passage we can learn that ________.

A．All the visitors’ names will be posted online soon after their visits

B．Not all visitors are allowed to visit the White House

C．Some visitors’ names can be found online until they’re not secret

D．The records of the visitors will be kept for at least 4 months

3.According to the passage, whose name might be kept secret for some time?

A．A tourist.          B．A businessman.     C．A foreign student.   D．A foreign minister.

4. What’s the main idea of the passage?

A．The White House will open the records of the visitors to the public.

B．In America more and more people are becoming policy makers.

C．The Americans have a right to know who are making policies.

D．President Obama has announced a new policy while on holiday.

高一英语阅读理解简单题查看答案及解析

The National Air and Space Museum in Washington, DC has thousands of objects on display, including the 1903 Wright Flyer, Charles Lindbergh’s Spirit of St. Louis, the Apollo 11 Command Module Columbia, and a lunar rock you can touch. In addition to our exhibition gallery, you may want to visit the Albert Einstein Planetarium, Lockheed Martin IMAX Theater, and the Public Observatory on the east end. There are many things to do at the Museum in DC. We offer daily tours and educational activities for both children and adults. We also have scheduled lectures and events throughout the year.

Hours and Admission: Open every day except December 25. Admission is free.

Regular Hours:　　 10:00 am to 5:30pm

Extended Hours:　 10:00 am to 7:30pm

December 26---30, 2014　　　　 March 30---April 20, 2015

Friday and Saturdays, April 24---May 16, 2015　 May 17---September 7, 2015

Visiting Tips: Limit the number of bags: All visitors are screened through metal detector upon entry. The fewer items you bring inside the Museum, the faster your entry. Before you visit, please review the list of prohibited items, which include pocket knives and tripods(三脚架). Visitors carrying prohibited items will not be allowed inside the Museum, so please leave them at home or in your car.

No Food or Drink: Only bottled water is permitted in the Museum. You may only consume food and other drinks in the Food and Drink Court, not in the Museum. Groups who bring food are encouraged to picnic on the National Hall.

Please Take Photos: You are welcome to take photos for personal use. However, tripods and monopods(单脚架) are not permitted without approval.

First Aid: The Museum has a First Aid office and a nurse on duty. Please contact the nearest security officer or the Welcome Center for assistance.

Visit the Welcome Center: At our Welcome Center in the South Lobby, staff and volunteers can answer any questions you have during your visit.

Open: 10:00am to 5:30　　　　 Phone: 202-666-2212

E-mail: NASM-visitorservice@si.edu

1.According to the passage, the National Air and Space Museum is a place _______.

A. where only adults can take part in some educational activities

B. where one can touch anything he likes

C. everyone can pay a visit to without buying tickets

D. everyone can visit without time limit all the year round.

2. If the Greens plan to visit the Musuem at 6:00pm, it is accessible on _______.

A. December 24, 2014(Wednesday)

B. March 1, 2015(Sunday)

C. September 15, 2015(Tuesday)

D. July 6, 2015(Monday)

3.A visitor to the Museum can _______.

A. get some medical treatment if he suddenly falls ill

B. take photos with tripods for personal use

C. bring fewer bags to go through metal detectors

D. eat and drink in the Museum or in the Food Court

4.The purpose of this passage is to _______.

A. attract people to explore the universe

B. make an advertisement for the Museum

C. encourage adults to bring their children here

D. show what is on display in the Museum

高一英语阅读理解中等难度题查看答案及解析

When Cherry Watson travelled on a recent flight from New York to Washington and noticed an “awful tension” in the cabin, she first thought it was caused by typical bad-tempered passengers. But as the flight neared its end, it became obvious that something was very wrong.

A teenage boy with Down Syndrome (唐氏综合症) who was traveling with his family had become upset and would not return to his seat, regardless of the cabin crew’s warnings over the loudspeaker that it was almost time to land. The pilot was forced to circle above the airport, delaying the landing and angering people on the already tense flight.

“If it was a cartoon,” remembered Watson, “there would have been smoke coming out of people’s ears.”

The boy’s elderly parents and adult brothers and sisters tried to persuade him to get off the floor and back into his seat, but in vain.Watson, who used to be a teacher, stood up and quickly headed to the back of the plane.

She found the boy in the passage between rows of seats, lying on his belly, and lay down on her stomach to face him. She began chatting calmly with him, asking his name, his favorite book, and his favorite characters. He told her he felt sick and she tried to comfort him.

Minutes later, he allowed her to hold his hand, and then together they got properly back into airplane seats. Watson asked for sick bags, and held them as the boy threw up several times, including on her. As she helped him clean up, she repeatedly told him everything would be okay and that they’d get through it together.

After the plane was finally able to land, no one was impatient to step off the flight as one might expect. Instead, calmed passengers—obviously following Watson’s amazing example—allowed the boy and his family to depart first, smiling at them as they passed. His parents tearfully thanked Watson for what she had done, and a doctor sitting nearby also let her know he had even taken notes on her expert way of handling the situation.

1.The landing was delayed because _____.

A. the plane was out of control

B. the pilot was forced to change the destination

C. a family ignored the warnings

D. a boy refused to sit in his seat

2.Watson successfully handled the “awful tension” by _____.

A. fighting against unfair treatment

B. calling on other passengers to join her

C. asking an experienced doctor to help

D. communicating with the boy

3.What changed the angry passengers’ attitude at last?

A. Watson’s efforts.　　 B. The plane’s safe landing.

C. The crew’s behavior.　　 D. The boy’s improvement.

4.Which of the following words can best describe Watson?

A. Patient and ambitious.　　 B. Kind and cool-headed.

C. Wise and cooperative.　　 D. Generous and cautious.

高一英语阅读理解中等难度题查看答案及解析

Thousands of objects have been on display in The National Air and Space Museum in Washington, DC, including the 1903 Wright Flyer, Charles Lindbergh’s Spirit of St. Louis, the Apollo 11 Command Module Columbia, and a lunar rock you can touch. In addition to our exhibition galleries, you may want to visit the Albert Einstein Planetarium, Lockheed Martin IMAX Theater, and the Public Observatory on the east end. There are many things to do at the Museum in DC. We offer daily tours and educational activities for both children and adults. We also have scheduled lectures and events throughout the year.

Hours & Admission: Open every day except December 25. Admission is free.

Regular Hours: 10: 00 am to 5: 30 pm

Extended Hours: 10: 00 am to 7: 30 pm

December 26—30, 2014.

March 30—April 20, 2015.

Fridays and Saturdays, April 24—May 16, 2015.

May 17—September 7, 2015.

VISITING TIPS:

Limit the Number of Bags: All visitors are screened through metal detectors upon entry. The fewer items you bring inside the Museum, the faster your entry. Before you visit, please review the list of prohibited items, which include pocket knives and tripods (三脚架). Visitors carrying prohibited items will not be allowed inside the Museum, so please leave them at home or in your car.

No Food and Drink: Only bottled water is permitted in the Museum. You may only consume food and other drinks in the Food Court, not in the Museum. Groups who bring food are encouraged to picnic on the National Mall.

Please Take Photos: You are welcome to take photos for personal use. However, tripods and monopods (单脚架) are not permitted without approval.

First Aid: The Museum has a First Aid office and a nurse on duty. Please contact the nearest security officer or the Welcome Center for assistance.

Visit the Welcome Center:

At our Welcome Center in the South Lobby, staff and volunteers can answer any questions you have during your visit.

Open 10: 00 am to 5: 30 pm

Phone: 202-633-2214

E-mail: NASM-Visitor Services@ si.edu

1.According to the passage, the National Air and Space Museum is a museum _______.

A. where only adults can take part in activities

B. which anyone can visit without buying tickets

C. where one can touch anything that he likes

D. which anyone can visit without time limits

2. If you plan to visit the Museum at 6: 00 pm, it is possible on _______.

A. December 24, 2014　　　　　　 B. March 1, 2015

C. July 6, 2015　　　　　　　　　　 D. September 15, 2015

3. The purpose of this passage is to _______.

A. make an advertisement for the museum

B. encourage adults to bring their children there

C. show what is on display in the museum

D. attract people to explore the universe

高一英语阅读理解中等难度题查看答案及解析

完形填空

This morning,I arrived at my office earlier to catch up on some emails.On the way to _____,I couldn’t __________ it when I saw some beautiful flowers at the grocery store.I picked some up, __________a few chocolate bars.

With the office so empty,I decided to take the __________to put the chocolate bars on some desks.I started heading towards areas __________ no one had come yet.

I __________ one and a smile card on the CEO’s desk.And then I went to his __________ desk and placed one there,and quickly put a third one on the desk of a quiet gentleman.Later,I entered the kitchen, __________ two cups of water and walked into the __________.I took out the flowers from my bag and __________ them in two bunches,one in each cup.

With a little sigh of __________,I stepped out of the rest room and looked around.The office was still __________ empty and the people closest to me were __________with a Monday morning “How was your weekend?” __________.I __________ and went back to my desk.

It struck me that my housemate who had packed my lunch for me so __________ today snuck(偷偷地给) a chocolate bar in there,so I __________ place it on the desk of our receptionist to complete the circle as I headed out of the office this evening.Our receptionist is always the first person in the office,and she always __________ me with a smile when I come in.Maybe tomorrow morning,this __________ can greet her.

I have no __________ how they feel when receiving the gifts,but they will surely smile!

1.A.work　　　　　　　　　　 B.job　　　　　　　　　　 C.company　　　　　　　 D.business

2.A.stop　　　　　　　　　　 B.help　　　　　　　　　 C.get　　　　　　　　　　 D.afford

3.A.regardless of　　　　 B.along with　　　　　 C.except for　　　　　 D.instead of

4.A.adventure　　　　　　 B.authority　　　　　　 C.possibility　　　　 D.opportunity

5.A.when　　　　　　　　　　 B.because　　　　　　　 C.though　　　　　　　　 D.where

6.A.chose　　　　　　　　　 B.placed　　　　　　　　 C.delivered　　　　　　 D.carried

7.A.wife’s　　　　　　　　 B.manager’s　　　　　 C.assistant’s　　　　 D.director’s

8.A.discovered　　　　　　 B.ordered　　　　　　　 C.filled　　　　　　　　 D.emptied

9.A.rest room　　　　　　 B.meeting room　　　　 C.smoking area　　　　 D.office room

10.A.applied　　　　　　　 B.adjusted　　　　　　 C.arranged　　　　　　 D.attached

11.A.regret　　　　　　　　 B.concern　　　　　　　 C.relief　　　　　　　　 D.excitement

12.A.especially　　　　　 B.thoroughly　　　　　 C.totally　　　　　　　 D.pretty

13.A.concerned　　　　　　 B.accustomed　　　　　 C.limited　　　　　　　 D.occupied

14.A.conversation　　　　 B.congratulation　　 C.consideration　　　 D.condition

15.A.amazed　　　　　　　　 B.smiled　　　　　　　　 C.delighted　　　　　　 D.celebrated

16.A.sweetly　　　　　　　 B.obviously　　　　　　 C.wildly　　　　　　　　 D.fortunately

17.A.need　　　　　　　　　 B.could　　　　　　　　 C.must　　　　　　　　　 D.dare

18.A.waves　　　　　　　　 B.nods　　　　　　　　　 C.greets　　　　　　　　 D.meets

19.A.gift　　　　　　　　　 B.performance　　　　 C.flower　　　　　　　　 D.method

20.A.opinion　　　　　　　 B.point　　　　　　　　 C.view　　　　　　　　　 D.idea

高一英语完形填空中等难度题查看答案及解析

On a Saturday morning earlier this September, the world got its first look at the Strati. This electric vehicle is unlike any other currently on the road. It rolls on four wheels, but its body and chassis(底盘) weren’t built in a factory. Instead, Strati’s designers used a technology called 3-D printing. It created those parts of the car in one piece, from the ground up.

“Compared to a typical vehicle on the road, the Strati definitely looks different,” says Greg Schroeder, a senior research engineer at the Center for Automotive Research in Ann Arbor, Mich. He did not work on the new car. His organization studies trends and changes in the auto industry.

It took 44 hours to print the new car at the International Manufacturing Technology Show in Chicago. Over the next few days, the car’s designers installed additional parts. These included the car’s engine, brakes and tires. Then, early on September 13, Jay Rogers climbed into the car, started its engine and drove the vehicle onto the street. Rogers helped found Local Motors. It’s the Arizona-based company behind the Strati. Two weeks later, his team printed a second Strati, and just as fast, at a fair in New York City.

Justin Fishkin, a local Motors official, sees the Strati as a window into the future. Today, car buyers are limited in their choice of a vehicle. They can order only what car companies have already designed. But in the future, he says, you may be able to design your own car online and then get it printed to order.

Manufacturing experts say 3-D printing has begun to revolutionize how they make things. The technology has been around for decades. But these machines used to be so expensive that only large companies could afford them. In the last few years, though, that has changed. Many of the machines are now inexpensive enough for small companies—or even individuals —to own. Some local libraries make them available to the public. High Schools are beginning to use them in classrooms. Wide access to these printers means people can now design and print a wide variety of new things.

The car’s printer is a one-of-a-kind device.

The technology behind the 3-D printer used in Chicago is an example of additive manufacturing. This process builds solid objects, slice by slice, from the bottom up. (“Strati” means layers, in Italian.) A mechanical arm moves a nozzle from one side to another, back and forth. As it moves, the nozzle deposits a liquid—often melted plastic or metal (but it could be food, concrete or even cells) —that quickly hardens or bonds to become solid or semi-solid. This creates a single, thin layer. Once a layer is complete, the printer starts depositing the next one.

“There’s a lot of interest in 3-D printing in the auto industry,” says Schroeder. Right now, the technology is particularly useful for building models of cars or car parts.

To compete with current auto manufacturers, the 3-D printer would have to increase in a hurry, Schroeder says. By contrast, he notes, a Ford F-150 pickup truck rolls off an assembly line at a rate of roughly one per minute. To print as many Stratis would require many more printers. Schroeder says he doesn’t see 3-D printing soon taking over for such high-volume manufacturing. But, he adds, “Who knows what will happen in the long term?”

Scientists at Oak Ridge National Laboratory in Tennessee designed the 3-D printer used in Chicago. Lonnie Love, a research scientist at the lab, led the effort.

Additive manufacturing often is slow and expensive. It also may produce materials that are unreliable, Love says. So for two years, his team searched for ways to make 3-D printing better. They built new machines and tested them over and over.

All of that work paid off: their new machine is fast and uses less expensive material than earlier printers. In addition, it prints a plastic embedded with fibers of carbon to produce a stronger material. This helps ensure the material won’t crack or break under pressure.

1.Which of the following statements about the first Strati is TRUE?

A. It was born in a car factory in Chicago.

B. All parts of it were not made by using a technology called 3-D technology.

C. It is a pity that it has not run on the street so far.

D. Many senior research engineers worked on it, including Greg Schroeder.

2.What can we infer from Paragraph 5?

A. Large companies are always rich enough to buy expensive things.

B. Now High Schools are beginning to use 3-D printers in classrooms.

C. Wide access to 3-D printers has made it possible for people to order novel things online.

D. High prices of new products can stop them from being used widely in the beginning.

3.What does the word “nozzle” in Paragraph 7 possibly refer to?

A. A single, thin layer.

B. A part of the 3-D printer.

C. A solid or semi-solid object.

D. A person who operates the machine.

4.Why did Lonnie Love make efforts to improve 3-D printing with his team?

A. Because additive manufacturing might produce unreliable materials.

B. Because he just was interested in making new things.

C. Because he just wanted to build new machines and test them

D. Because additive manufacturing is always slow but inexpensive.

5.Which of the following can be the best title for this passage?

A. 3-D Printers Are Coming

B. 3-D Printers Are Becoming Well- Known

C. 3-D Printers Are Becoming Cheaper

D. 3-D Printers Are Making Cars

高一英语阅读理解中等难度题查看答案及解析