题目内容

【题目】用所给单词的适当形式填空。

1Ben likes science and he wants to be a __________________(science)in the future.

2I got an__________________(invite)to the evening party yesterday.

3The students in Class Two are having a __________________(discuss) about how to achieve a balance between study and play.

4Many animals are in great __________________(dangerous).We must try to protect them.

5The Whites are looking forward to __________________(move)to their new house next week.

【答案】

1scientist

2invitation

3discussion

4danger

5moving

【解析】

1句意:本喜欢科学,他希望将来成为一名科学家。scientist的意思是“科学家”,根据句意,故填scientist。

2句意:昨天我收到了参加晚会的邀请。这里用invite 的名词invitation,意思是“邀请”,根据句意及所给单词提示,

故填invitation。

3句意:二班的学生正在讨论如何在学习和玩耍之间取得平衡。短语have a discussion about…表示关于……做一个讨论。根据句意,故填discussion。

4句意:许多动物处于危境,我们必须努力保护他们。短语be in danger表示处于危境;根据句意,

故填danger。

5句意:怀特一家期待着下周搬到他们的新家。短语look forward to doing sth,表示期待做某事。根据句意,故填moving。

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

Researchers are finding that man-made light from some electronic products at night may reduce the brain chemicals(化学物质) that help sleep. The researchers showed that sitting in the light from computer tablets clearly lowered levels of the chemical which manages our body clocks and plays a 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(测量) how much light their eyes received. They found that two hours of sitting before a bright tablet screen at night reduced the sleep chemical levels by about 22%.

Studies of students using computers at night have got the similar results. And researchers say that may not only cause sleeplessness but also raise 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 at the very least turning down your screen as much as possible.

根据材料内容选择最佳答案。

【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】The volunteers in the study did the following things EXCEPT ___________.

A. listening to music

B. playing computer games

C. watching movies

D. reading electronic books

【3】How may electronic products influence people’s sleep?

A. Make our brains more active.

B. Make our body weak.

C. Lower our brains’ chemicals that help sleep.

D. Change our body clocks.

【4】The underlined word "that" probably means ___________ in the passage.

A. making a survey about sleep

B. using smartphones in the daytime

C. sitting in a bright room

D. surfing the Internet at night

【5】What does the passage tell us to do to have a good sleep?

A. Learn to use smartphones or iPad.

B. Watch some relaxing TV programs.

C. Turn down the screen to the lowest.

D. Try to sleep earlier than before.

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