题目内容

People were running in all directions ________ pieces of glass were falling down.

A. while B. when C. as D. since

A

【解析】

试题分析：句意：当一块块玻璃碎片掉下来的时候,人们正在惊慌的四处逃散。A. while ，连词，当……时候；B. when 连词，当……时候；C. as 连词，随着，因为；D. since 连词，自从。in all directions在四面八方。fall down，落下。pieces of glass，玻璃碎片。While引导时间状语从句，主句和从句都用了过去进行时。根据句意，故选A.

考点：考查连词的用法。

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Many of us don’t pay attention to the importance of eye care. It’s said that if you take care of your body, then you can be healthy. That is why our eyes should be given a lot of care. Natural eye care should be put in a number one place.

There are several causes leading to poor eyesight like not enough food, gene(基因) and aging(年龄增长). Televisions, computers and reading are also the causes of having poor eyesight.

If you happen to work in front of the computer, it is best to take a rest every once in a while. Something dirty can cause redness and they will make you feel uncomfortable. It is bad for your eyes, too. If this happens, the best way is to clean your eyes by using cold water. You must also try your best to protect your eyes from harmful thing. For example, sunglasses are not just fashion but they can also serve as a great way to protect your eyesight from UV rays.

Eating healthy foods will do good to your eyesight. Remember that vitamins(维生素) A、C and E are good for eyes. Try to eat food groups that have these vitamins. And you should do eye exercises because exercise protects your eyesight, too. If a person exercises regularly(规律地) and eats the right kind of food, his eyes will stay in good condition for a long time.

All above are natural ways of eye care that help us keep healthy eyes. Being happy all the time can be helpful to a person’s eyesight, too. In a word, eye care is very important, no matter how old a person is.

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完形填空（共15题，每小题1分，计15分）

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1.A. drank B. drinking C. is drinking D. was drinking

2.A. a trouble B. a trouble C. dangerous D. danger

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4.A. them B. one C. it D. this

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8.A. long before B. before long C. after long D. long after

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