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A beautiful and very successful actress played the lead role in a new musical show. Her home was in the countryside, but she did not want to go back there every night, so she bought an expensive house in the centre of the city, she got some beautiful furniture(家具) and had a man to paint the rooms in new colours.
It was very difficult to get tickets for her show, because everybody wanted to see it. So she decided to give the painter two of the best seats. She hoped that this would make him work better for her. He took the tickets without saying anything, and she heard no more about them until the end of the month, when she got the painter’s bill (帐单). At the bottom of it were these words: “Four hours watching Miss Hall sing and dance : 3 pounds,” with this note: “ After 5 p.m. I get 15 shillings (先令) an hour instead of 10 shillings.”
1.The actress bought a house in the centre of the city because _________.
A. she liked to live in the busiest place
B. she didn’t like to live in the country
C. her home was far away from where she worked
D. she didn’t want to go back to her hometown any longer
2. It can be learned from the text that one pound is_________ shillings.
A. 10 B. 12 C. 20 D. 15
3.What kind of man was the painter?
A. He was a careful man.
B. He was a poor man.
C. He was not friendly to others.
D. He knew little about music and dances.
难度: 中等查看答案及解析
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Mobile phones help us easily find people anywhere at any time. A mobile phone can include many things, such as games, music and Internet access(互联网接入). Today, 4.6 billion people around the world have mobile phones, according to CBS News.
However, mobile phones may cause cancer, according to the World Health Organization. In a 2010 study, people who used a mobile phone for 10 years or more were more than two times as likely to get brain cancer, according to CNN.
“I think it is a good idea to give the public some kind of warning that long-term exposure(暴露) to radiation (辐射) from your mobile phone could possibly cause cancer,”told Dr Henry Lai. Lai is a scientist of bioengineering(生物工程) at the University(大学) of Washington who has studied radiation for more than 30 years.
These suggestions may help you reduce your risk of cancer:
1. Use a headset(耳机) or speaker
Headsets give out much less radiation than phones. Some headsets give out low-level radiation. However, you should take it off your ear when you’re not talking to anyone. Using your phone with a speaker will also make it safer.
2. Listen more, talk less
Your phone gives out radiation when you talk or text, but not when you’re listening or getting messages. Listening more and talking less can lower the risk of cancer.
3. Hold the phone away from your body
Hold the phone away from your body when you’re talking, not against your ear. Also, don’t keep it in your pocket.
4. Choose texting over talking
Phones give out less radiation to send texts than to carry a person’s voice. Texting also keeps radiation away from your head.
5. Poor signal? Stay off the phone
A poor signal means that the phone needs to give out more radiation to work. Make and take calls when your phone has a strong signal.
1.The study from 2010 showed that _________.
A. people should use mobile phones for no more than 10 years
B. people who don’t use mobile phones will not get brain cancer
C. the longer people use mobile phones, the more likely they are to get brain cancer
D. the more mobile phones people have, the more likely they are to get brain cancer
2.Which is NOT true about the suggestions mentioned in the passage?
A. Some headsets don’t give out radiation.
B. It’s not good to carry mobile phones in pockets.
C. Texting is better than making phone calls.
D. Don’t make calls when the signal is weak.
3.The passage mainly talks about _________.
A. the development and advantages of mobile phones
B. the reason why mobile phone radiation causes cancer
C. the best ways to use mobile phones to communicate
D. how to protect ourselves from mobile phone radiation
难度: 中等查看答案及解析
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A study of sleep in sparrows suggests the relationship between sleep and the ability to learn may be more complicated (复杂) than realized．
Niels C. Rattenborg of the University of Wisconsin—Madison wanted to find out how the sparrows were able to deal with getting so much less sleep．He and his team brought eight wild birds into a lab and watched them for one year．They invented a game to check how well the birds could learn．In the game, the sparrows had to peck (啄) three buttons (按钮) in a certain order to get a food treat．The scientists discovered that the birds' ability to learn the right button order depended on (依靠) two things, the time of year and the
amount of sleep the birds had had．
During the migration (迁徙) season, the sparrows were restless at night and got much less sleep than usual．Even so, they were able to understand how to get the food quickly as if they'd had a regular night of sleep．Outside the migration season, they found the sparrows that got less sleep than usual had much more difficulty learning how to get the food treats than birds that had a regular sleep．
The results show that the sparrows can deal with much less sleep during the migration season than usual．If scientists can find out why, they may learn from sparrows and find ways of helping people deal with getting much less sleep．Until scientists fully understand the relationship between sleep and learning, it's better to get plenty of sleep when preparing for an exam．
1.Why can sparrows deal with much less sleep during the migration season?
A. They eat more．
B. The climate is better．
C. They find enough food．
D. Scientists still don't know it．
2.What can we infer from the passage?
A. When tired, you should try to focus (聚焦) on your study．
B. You should get enough sleep before an exam．
C. You should migrate like sparrows．
D. You should sleep less at night．
3.What would be the best title for the passage?
A. Sleep lessons from sparrows
B. How to get good exam results
C. How sparrows get a food treat
D. Sparrows' migration
难度: 中等查看答案及解析
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Do you suppose Darwin, one of the greatest scientists of all time, really did fools' (傻瓜的) experiments? Or did he do experiments that were so simple and basic (基础的) that other people just thought they were foolish?
Sometimes, people think they already know the answer to a question or a problem．Sometimes, they really do know an answer, but without thinking it is important．
Charles Darwin didn't just think he knew something．And, he believed all things could be important no matter how simple they seemed to be．
Suppose you drop pieces of paper that are of exactly the same size and shape．If you drop them at the same time in the same place, they will fall in the same way．Now make one of the sheets of paper into a tight little ball and let it drop along with the other pieces．What happens? You have done an experiment that is so simple that you might think it couldn't be worth anything．
But this simple experiment is important．It explains part of our present day understandings of physics (物理学) ideas that were worked out long ago by Galileo and Newton．And these understandings set aside some of ancient Greek (古希腊的) physics．
The scientist sometimes stops to look at very simple things and to think very hard about them．Even the simplest idea, which we might think is foolish, can shake the foundations (基础) of science．
1.The passage tells us that Charles Darwin ________．
A. was a great English scientist
B. always liked doing the experiments that others thought difficult
C. thought even the simplest thing was important
D. didn't get along well with others
2.The underlined phrase "set aside" in Paragraph Five most probably means "________．"
A. throw away
B. receive
C. help with
D. learn from
3.The writer of the passage tries to ________．
A. show us that Charles Darwin, Galileo and Newton are the greatest scientists in the world
B. draw the conclusion that basic sciences are simple things
C. prove that two sheets of paper, with the same size and shape, will fall at the same speed
D. draw our attention to everyday things around us
4.Which one of the following is TRUE according to the passage?
A. Darwin really did fools' experiments．
B. According to some people Darwin did foolish experiments．
C. It is believed by all the people that things could be important though they seemed to be simple．
D. Galileo and Newton worked out ancient Greek physics．
难度: 中等查看答案及解析