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Don't __ your lessons, we can help you __ them.

A.worry; with                                                    B.worry about; with

C.worry; on                                            D.worry about; on

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Have you ever been ill? When you are ill, you must be unhappy because your body becomes hot, and there are pains all over your body. You don’t want to work, and you stay in bed, feeling very sad.

What makes us ill? It is germs(细菌). Germs are everywhere. They are very small and you can’t find them with your eyes, but you can see them with a mi­croscope(显微镜). They are very very small and there could be hundreds of them on a very small thing.

Germs are always found in dirty water. When we look at dirty water under the microscope, we shall see them in it. So your father and mother will not let you drink dirty water.

Germs can be found not only in water but also in air and dust(灰尘). If you cut your finger, if some of the dust from the floor goes into the cut(割开处), some of the germs would go into your finger. Your finger would become big and red, and you will have much pain in it. Sometimes the germs would go into all of your body, and you would have pain everywhere.

1.Which of the following is true?

A.If things are very very small, they are germs.

B.If things can’t be seen, they must be germs.

C.Germs are only in dirty water.

D.Germs are everywhere around us.

2.Why don’t your parents let you drink dirty water?

A.You haven’t looked at it carefully.

B.Water can’t be drunk in this way.

C.There must be lots of germs in it.

D.Water will make you ill.

3.What’s the main idea of the passage?

A.Germs may make us ill.

B.Germs are in dirty water.

C.Don’t drink dirty water.

D.Take care of your fingers.

 

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