In today's world, sleep experts say that for a better night's rest, Americans should turn off their smartphones or iPads before sleeping. Such electronic products make the brain more active, and then 题目和参考答案——青夏教育精英家教网—

题目内容

In today's world, sleep experts say that for a better night's rest, Americans should turn off their smartphones or iPads before sleeping. Such electronic products make the brain more active, and then influence people's sleep. But according to a latest survey, more than 90% of Americans usually use a computer or some other kinds of electronic products in the hour before bed.

Researchers found that man-made light from some electronic products at night might reduce the levels of the brain chemicals that help sleep. The researchers showed that sitting in the light from tablets clearly reduced the levels of the chemicals which manage our body clocks and play a great role in the sleep cycle.

In the study, the researchers let volunteers read, play games and watch movies on a tablet for different time while measuring how much light their eyes received. They found that sitting for two hours before a bright tablet at night reduced the levels of the chemicals by about 22%.

Studies of students using computers at night have got the similar results. And researchers said that might not only cause sleeplessness, but also increase the risk of obesity(肥胖症), diabetes(糖尿病) and other diseases.

To be on the safe side, the researchers advise us to use computers less before bed, or turn down our screens low.

1.What can we learn from the first paragraph?

A.Americans don't get enough sleep. B.Electronic products are very popular.

C.The brain becomes more active at night. D.Sleep experts never use smartphones.

2.How many electronic products influence people's sleep?

A.By making our brains more tired. B.By making our bodies weak.

C.By reducing the levels of the brain chemicals that help us sleep. D.By changing our body clocks.

3.What does the underlined word "that" refer to?

A.Making a survey about sleep. B.Using smartphones in the daytime.

C.Sitting in a bright room. D.Surfing the Internet at night.

4.What do the researchers advise us to do to have a good sleep?

A.Learn to use smartphones or iPads. B.Watch some relaxing TV programs.

C.Turn down the screens low. D.Try to sleep earlier than before.

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句型转换。（每空只写一词）

1.Molly plays the piano with her friends.（用now改写句子）

Molly ______ ______ the piano with her friends now.

2.I have to be quiet in the library.（改为一般疑问句）

______ you ______ to be quiet in the library？

3.They can help me with my English.（对划线部分提问）

______ ______ they help you with？

4.John likes koalas because they are cute.（对划线部分提问）

______ ______ John like koalas？

5.You can't arrive late for class.（改为祈使句）

______ ______ late for class.

I can’t go out ________ school nights because I have to finish my homework first.

A.at B.in C.on

I found myself in a difficult ______. I must do something to get out of it.

A.competition B.discussion C.prediction D.situation

用下列所给词组成句子，使句子通顺、合理、意思完整。

1.drink, you, some, should, tea, hot, honey, with,

_____________________________________________.

2.washed, I, cut, the, and, medicine, some,put,it,on

_____________________________________________.

3.almost, lost, she, life, her, of, because,accidents,climbing

_____________________________________________.

4.came, your, who, to, office, today

_____________________________________________?

5.did, how,Aron,himself,free

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________ you've tasted them, you can't imagine how delicious the dishes are.

A.Because B.Although C.Unless D.So

阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

When you hear the word EPCOT, maybe you think of the building in the Disney park 1. (immediate)—even if you have never been there. But what does the word EPCOT actually mean?

Let’s study the history of the park 2. (see) how it got the name. It was Walt Disney himself that came up 3. EPCOT. So what does it stand for? Well, Walt thought it up in 1966, when his plans for a theme park in Florida were very 4. (difference) from what’s there today. Disneyland, in California, had been up and running for more than ten 5.(year). Walt’s idea was to build an Experimental Prototype Community of Tomorrow(未来的实验原型社区). That’s what EPCOT really 6. (stand) for. And he originally(最初) planned for it to be, not a theme park, but 7. actual community.

After Walt Disney’s 8. (die) in 1966, other people of the Walt Disney Company 9. were not sure how to move forward with the city stuck to his ideas and themes for the park. They also built the park by 10. (take) his forward—thinking advice on creativity and technology. Of course, they kept its name!

To wear or not to wear masks？

In the West, people are taught to wear masks only when they get sick. Masks are seen as a tool to protect sick people and prevent the disease from spreading, so healthy people don’t need to wear them. Therefore, during the novel coronavirus outbreak, overseas Chinese students said that they would be “stared at like a virus spreader” if they go out with a mask.

In Asian countries like China and Japan, there has been a long tradition of mask-wearing. In China, for example, when doctor Wu Liande invented the modern medical mask during the pneumonic plague (肺鼠疫) in 1910, the mask became a symbol of China’s position as a modern, scientific nation, according to Scottish medical anthropologist (人类学家) Christos Lynteris. The 2003 SARS epidemic again led to the wide use of masks as a form of anti-viral protection in China and elsewhere in East Asia.

In Japan, wearing masks has long been seen as a manner to reassure others when one catches a cold or flu. Some Japanese also turn masks into fashion accessories (配饰), with different colors and patterns to match their clothes. Wearing masks is also a way to “hide” for young women when they don’t have their makeup on.

In more collectivist cultures in Asia, wearing masks might also be a symbol of solidarity during the outbreak, according to Lynteris. “Mask culture in Asia creates a sense of a fate shared, common obligation and civic duty.” People wear masks “to show that they want to stick together” in the face of danger, Lynteris wrote.

1.Why don't healthy people in the West wear masks?

A.They don't think masks can prevent disease. B.They think masks are for sick people to wear.

C.Only medical workers need to wear masks. D.Wearing a mask looks funny.

2.Masks have been widely used in China since _____.

A.the invention of the modern medical mask B.the pneumonic plague in 1910

C.Christos Lynteris wore one publicly D.the outbreak of SARS in 2003

3.What does Lynteris mean in the last paragraph?

A.People have no sense of duty if they don’t wear masks.

B.Mask culture creates a sense of collective obligation.

C.Asian people are more united in the face of danger.

D.We are a community with a shared future for mankind.

4.The purpose of the story is to _____.

A.explain why Westerners don’t wear masks

B.prove the importance of wearing masks during an epidemic

C.how opinions about masks differ between different countries

D.explain the history of masks

McDull is a talking piglet(小猪). He isn’t smart or good-looking. But he has a heart of gold(金子). McDull lives with his mother Mrs Mak in Hong Kong. Before his birth, his father left them. Mrs Mak had to raise McDull by herself.

They are not rich, but Mrs Mak tries her best to make a good life for McDull. However, when McDull grows up, he becomes a detective(侦探) and leaves home. The mother and the son are not as close as before. Can they go back together and be close mother and son again?

You may find the answer by watching the movie McDull · Me & My Mum. The movie is the fifth in the McDull series. As the first appearance(出现) of McDull film, McDull became a popular cartoon character(角色) because of his spirit(精神) of never giving up. The funny piglet has many dreams but fails every time he tries. He is down, but he keeps trying and works hard for other dreams.

Mrs Mak doesn’t appear very often in the first four McDull movies. But in McDull · Me & My Mum, she is a main character. The film is about mother’s love.

1.McDull must be a ________ piglet.

A.wild B.smart C.good-looking D.brave

2.McDull grew up ________.

A.with his father B.with his parents C.with his mother D.alone

3.Why does McDull leave his mother?

A.Because he becomes a detective. B.Because he finds his mother a detective.

C.Because he finds his mother not kind to him. D.Because his mother doesn’t like his dreams.

4.The underlined “ giving up” means ________.

A.having dreams B.stopping trying C.feeling sad D.making wishes

5.Which is TRUE about the latest McDull film?

A.It is the fourth in the McDull series. B.McDull’s mother seldom appears in the film.

C.It is a film about a son’s love for mother. D.It tells us a story between a mother and her son.

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