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【简答题】

Everyone likes living in a clean and comfortable environment. If the environment(环境) are bad, it will affect(影响)our body, and make us not feel well. Sometimes we may be terribly ill. At that time we don’t want to work, and we have to stay in bed and rest at home. So the environment is very important to us.
It’s germs that makes us ill. There are germs everywhere, They are very small and you can’t find them with your own eyes, but you can see them with a microscope(显微镜)They are very small and there may be hundreds of them on a very small thing, Germs can always be found in dirty water. When we look at dirty water under the microscope, we shall see them in it. Germs can also be found in air and dust(灰尘). If you cut your finger, some of the dust from the floor may go into it, and you will have much pain in it. Sometimes the germs will go into all of your body, and you will have pain everywhere.
To keep us healthy, we should try to our best to make our environment become cleaner and tidier. This needs us to act together.
小题1:The writer tell us that________.A.we like working when we are illB.germs can’t live in the water.C.we can’t feel ill if the environment is bad D.we feel well when the environment is good.小题2:Germs are________.A.very small things that you can’t see with your eyes.B.the things that don’t effect people.C.the things that you can find with your eyes.D.the things that are very big.小题3: Where can germs be found? They can be found_________.A.on the small thingB.in air and dustC.only in dirty waterD.everywhere小题4:.How will you feel if germs go into the finger that is cut?A.I will feel nothing.B.I won’t mindC.I will feel tense.D.I will feel painful.小题5:From the passage we know that________.A.environment doesn’t affect our lifeB.we don’t need to improve our environmentC.germs may make us illD.if the environment is better, germs will be more

题目标签:影响显微镜
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【多选题】染色体多态性可作为较稳定的、显微镜下可见的遗传标志用于

A.
染色体病的检查
B.
亲权鉴定
C.
追溯额外染色体的来源
D.
基因诊断
E.
异常染色体的来源

【单选题】偏光显微镜主要用于观察

A.
茎、叶的表皮组织的结构
B.
花粉粒
C.
种皮和果皮的纹饰
D.
动物药材的体壁
E.
矿物类中药

【多选题】电晕对系统的影响有()。

A.
损耗电功率
B.
改变线路参数
C.
对通讯有相当大的影响
D.
没有影响

【多选题】在使用显微镜之前,应该()

A.
佩戴操作证
B.
外部人员登记好使用记录
C.
直接使用
D.
检查显微镜是否正常