题目内容

Only when our project has been approved of by the committee ______ to carry it out.

A. did we start B. we started

C. can we start D. we start

C

【解析】

试题分析:考查强调句。句意∶只有我们的计划被委员会证明我们才能开始施行。需倒装。句意:只有方案通过,才能实施。Can 提前即可。故选C。

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It’s well known that our human memory can fail us. People can be forgetful, and they can sometimes also “remember” things incorrectly, with damaging consequences in the classroom, courtroom, and other areas of life. Now, researchers show for the first time that bumblebees(大黄蜂) can be unreliable witnesses too.

Bumblebees are rather clever animals, which explains why Chittka has been studying learning and memory in the insects for the last 20 years.

Most times when people have studied memory in animals, errors in performance have been taken to mean that the animals failed to learn the task or perhaps learned it and then forgot. But what if animals can experience a more interesting type of memory failure?

To find out, Chittka first trained bumblebees to expect a reward when visiting a yellow artificial flower followed by one with black-and-white rings. During subsequent tests, bees were given a choice between three types of flowers. Two were the types they’d seen in the training before. The third had yellow-and-white rings, representing a mixed-up version of the other two. Minutes after the training, the bees showed a clear preference for the flower that recently rewarded them.

One or three days later, however, something very different happened when the bumblebees’ memory was put to the test. At first, the bees showed the same preference displayed in the earlier tests, but as the time went on, they began selecting the flower with yellow rings, even though they’d never actually seen that one in training before.

Chittka says that insects make similar errors in the conjunction (结合) of long-term memories as humans do. The ability to extract (提取) common features between different events in the environment might come at the expense of remembering every detail correctly. In bees, with their limited brain capacity (容量), the pressure to store main features of several objects rather than each individual object might be much greater, compared with humans.

1.Which of the following might be the best title of the passage?

A. Human memory can fail sometimes.

B. Bumblebees make false memories too.

C. Humans are not as clever as bumblebees.

D. Bumblebees have extraordinary memory.

2.Which of the following is the closest in meaning to the underlined word “subsequent”?

A. scientific B. accurate

C. following D. exceptional

3.According to the passage, which of the following statements is NOT true?

A. Memory failure influences students’ study effects.

B. Bumblebees’ memory is complicated and worth studying.

C. The bees couldn’t make out which flower had rewarded them days later.

D. Bumblebees are stupid insects with limited brain capacity.

4. What does the test mentioned in Paragraph 4 tell us?

A. Short-term memories serve the bees well.

B. The yellow artificial flower appeals to the bees.

C. Bumblebees like the flowers with yellow-and-white rings.

D. Bees have remarkable abilities to distinguish colors.

5.We can infer from the passage that ______.

A. Chittka thinks that bumblebees failed to remember the color of the flowers

B. Researchers have learned that bumblebees are unreliable animals

C. There exist no similarities between the memory errors in humans and bees.

D. It is less challenging for humans than bees to store main features of several objects.

Most children have heard their parents at one time or another yell “sit up straight!” or “don’t slouch!” In the past, this was usually heard at the dinner table as children ate dinner. But these days, it is also heard around another activity – video games.

Ten-year old Owaish Batliwala, from Mumbai, India, admits he spends three to four hours each day playing games on his tablet computer. His mother Mehzabin became concerned when her son started saying that his neck hurt. She said, "My son started having neck problems around June or July. The pain slowly spread to his hand and his back. He plays for hours on the iPad and mobile phone. This is what has caused the problem."

Sadia Vanjara is a physical therapist. She says the number of young children with chronic pain in their necks, arms and shoulders is on the rise. Dr. Vanjara says the pain is not from aging, accidents or disease. It is from poor posture, or body position, while playing video games.

This is a problem in many parts of the world. But there are more smartphone users in India than anywhere else in the world, except China. Networking equipment company Cisco estimates that the number of smartphone users in India will increase from 140 million today to 651 million by 2020.

19-year old student Nida Jameel says she feels pain in the finger which holds the weight of her smartphone most of the day. She says she uses her smartphone 24/7. This means 24 hours a day, seven days a week, or all the time.

Dr. Vanjara says the best treatments for the pain are daily exercises. Experts advise taking breaks from using a computer or other device often. Stand up. Stretch your legs, back, shoulders and arms. And when your work or school work is done, unplug and exercise.

1. What can be the best title of the passage?

A. Too Much Gaming is a Pain in the Neck

B. The Influence of Too Much Gaming on People’s Health

C. How To Avoid the Pain in the Neck

D. How To Be More Fit

2.In paragraph 1, the underlined word “slouch” means _____

A. stopping working

B. bending one’s head or shoulders forward

C. being much too calm about something

D. being enthusiastic about the things that are not related with study

3. In which part of a website can we read the passage?

A. School and Education B. Entertainment

C. Health and Lifestyle D. Food and Recipes

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