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. 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 parents will not let you drink dirty water. Germs aren’t found only in water. They are found in air and dust.If you cut your finger, if some of the dust from the floor goes into the cut. 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.
Which of the following is true? 

A．Ifthingsareveryverysmall,theyaregerms.

B．Ifthingscan‟tbeseen,theymustbegerms.

C．Germsareonlyindirtywater.

D．Germsareeverywherearoundus.

What is a microscope used for? 

A．Makingveryverysmallthingslookmuchbigger.

B．Makingverybigthingslookmuchsmaller.

C．Helpingyoureadsomenewspapers.

D．Helpingyouifyoucan‟tseethingsclearly.

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.

Which of the following is not true?
A  Germs can be found both in water and in the air.
B. Germs can go into your finger if it is cut.
C. If your temperature is not OK, there must be germs in your body.
D. If your finger isn’t cut, there aren’t any germs on it.
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.