滚动式碾压机械包括（）几种。A、光面碾 B、重力式碾 C、羊足碾 D、气台碾

把长度为20cm的线段进行黄金分割，则较短线段的长是（    ）cm．

人民法庭是______。

A．县一级司法机关

B．临时审判机关

C．县以下群众性自治组织

D．省一级司法派出机关

非正式组织

阅读理解。

                                                               Body and Food

     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

5. From the passage we can draw a conclusion that if we want to keep healthy,we should ______.

A. only eat an apple a day

B. eat properly

C. take as many vitamin pills as possible

D. throw something into our stomachs slowly and carefully

公称直径相等的内、外螺纹中径的基本尺寸应相等。( )