问题 填空题

二次回路应严格遵守保护装置24V开入电源()的原则,以免引进干扰。

答案

参考答案:不出保护室

阅读理解

阅读理解。

     Your body, which has close relations with the food you eat, is the most important thing you own,

so it needs proper treatment and proper nourishment (营养).The old saying "An apple a day keeps

the doctor away "is not as silly as some people think. The body needs fruit and vegetables because

they contain vitamin C. Many people take extra vitamins in pill form, believing that these will make

them healthy.

     But a good diet is made up of nourishing food and this gives all the vitamins you need. The body

doesn't need or use extra vitamins, so why waste money on them?

     In the modern western world, many people are too busy to bother about eating properly. They

throw anything into their stomachs, eating hurriedly and carelessly. The list of illnesses caused or

made worse by bad eating habits is frightening,

1."Your body has close relations with the food you eat."It really means that ______.

A. all kinds of food you eat can be made into your body

B. your body is made up of the food you eat

C. what you eat has great effect on your health

D. the more you eat, the fitter you will feel

2. The old saying referred to in the passage tells us that ______.

A. eating apples regularly does lots of good to our health

B. the apple is the best among all kinds of fruits

C. apples can take the place of doctors

D. an apple is a sure cure for illness

3. In the second paragraph, the writer tries to let us know ______.

A. our bodies need food or we can' t live

B. often eating apples is a good habit

C. taking extra vitamin pills is completely useless

D. a good diet is of great importance for our health

4. In the modern western countries ______.

A. people don't want to pay more attention to their eating

B. lots of people's illnesses are caused or made worse by bad eating habits

C. people throw everything into their stomachs without chewing

D. people are only too busy to cook meals for themselves

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