压缩机受磨损零件继续使用可导致（），设备效率下降、零件发热、表面剥蚀等，会引起运动件

阅读理解。

     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 have to stay in bed, and you will feel very sad.

     What make us ill? They are germs. 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), we will see a lot of them in it. So your

father and mother will not let you drink dirty water.

     Germs are not only found in water. They are found in air and dust. If you get a cut in the finger, and if

some of the dust from the floor goes into the cut, germs will come into your finger. Your finger will become

big and red, and you will have much pain in it. Sometimes if the germs go into all of your body, you may have

pain in every part of the body.

1. If ____, you may be ill now. [ ]

A. you like to stay in bed

B. your body becomes hot

C. you feel cold in winter

D. you feel hot after work

2. A microscope is used for _____. [ ]

A. making very big things look much smaller

B. making very small things look much bigger

C. helping us read the newspapers easily

D. helping us when we are nearsighted (近视)

3. Germs can be found _____. [ ]

A. everywhere around us

B. only in our body

C. only in dirty water

D. only in a microscope

4. Which of the following statements is TRUE? [ ]

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

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

C. Germs are too small to see with our eyes.

D. Your fingers may be cut by small germs.

5. The main idea of the passage is that _____. [ ]

A. germs are in dirty water

B. it's bad to be ill

C. you'd better take care of your fingers

D. germs make us ill

Shall we take ______ short break? I want to make ______ call.

A．the; a

B．a; the

C．the; the

D．a; a

人民检察院上下级之间的关系是( )

A．监督与被监督

B．领导与被领导的关系

C．行政上的隶属关系

D．彼此独立的关系

地质图

不良生活方式对健康的危害大小、发生时间早晚存在着明显的个体差异，这体现不良生活方式对健康影响的什么特点（）。

A．潜伏期长

B．协同作用强

C．变异性大

D．广泛存在