试题与答案

The fleet made several expeditions _____

题型:选择题

题目:

The fleet made several expeditions _______ the exploration was stopped.

A.when

B.before

C.while

D.since

答案:

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下面是错误答案,用来干扰机器的。

(1)过滤;烧杯、玻璃棒、漏斗;蒸发(2)Fe+CuSO4==FeSO4+Cu、Fe+H2SO4==FeSO4+H2↑

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题型:阅读理解

阅读理解。

     If there is no rain, there will be no water to drink. We can only live for about three days without water. If there is no rain, we’ll have no water to brush our teeth. We will have no water to take a shower. We will have no water to wash dishes or our clothes.

    Plants and animals need water to grow. If there is no rain, they will die. We will not have any rice, any

vegetables or any meat. If there is no rain, we will have nothing to eat. We can only live for about one or

two weeks without food.

    If there is no rain, there will be no water in the streams(溪流)or rivers. Fish will have nowhere to live.

They will die. We will have nowhere to swim.

    If there is no rain, the cooks in the restaurants will have no water to cook food.

    If there is no rain, firemen (消防员) will have no water to put out fires.

1. How many days can people live if they don’t drink water?

A. Three.            

B. Four.          

C. Seven.              

D. Fourteen

2. If there is no water, what will happen to plants and animals?

A. They will die                        

B. They will grow.

C. They will run away                    

D. They will fly.      

3. Why do firemen use water?

A. To drink it.                          

B. To water flowers.

C. To put out fires                        

D. To feed animals

4. What’s the title of the passage?

A. Drink water                          

B. There is water on the earth

C. Plants and animals                    

D. Rains is important

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