试述腓骨肌萎缩症的临床特点。

阅读理解。

     Will it matter if you don't take your breakfast? A short time ago, a test was given in the United States.

People of different ages, from 12 t0 83, were asked to have a test. During the test, these people were

given all kinds of breakfast, and sometimes they got no breakfast at all.  Scientists wanted to see how

well their bodies worked when they had eaten different kinds of breakfast.

     The results show that if a person cats a right breakfast, he or she will work better than if he or she has

no breakfast.  If a student has fruit,  eggs,  bread and milk before going to school,  he will learn more

quickly and listen more carefully in class.

     The result is opposite to what some people think.  Having no breakfast will not help you lose weight.  

This is because pcople become so hungry at noon that they eat too much for lunch.  They will gain weight

instead of losing it.  You will lose more weight if you reduce your other meals.

1. During the test,  the people were given _______.

A. no breakfast at all    

B. different foods or sometimes none

C. very rich breakfast    

D. little food for breakfast

2. The results show that_______.

A. breakfast has great effect (影响) on work and bodies

B. breakfast has little to do with a person's work

C. a person will work better if he only has fruit and milk

D. girl students should have little for breakfast

3. According to the passage, some people think that if you don't have breakfast,you will _______.

A. be healthier  

B. work better    

C. lose weight    

D. lose your way  .

4. The word "reduce"in the last sentence means _______.

A. 增加    

B. 减少    

C. 放弃    

D. 享用

5. Which of the following is NOT right?

A. It's bad for your health to have no breakfast.

B. Too little for breakfast and much for lunch make you fatter.

C. If you don't eat much for lunch and supper, you may lose weight.

D. The more breakfast you have,  the more quickly you'll learn in class.

彩色多普勒血流显像与伪彩B彩的区别是（）

A.彩超就是伪彩

B.彩超是由灰阶转换来的

C.伪彩是彩色血流显像

D.彩超与伪彩完全不同

E.以上都对

炉内烟气对水冷壁的换热方式是（）。

A.辐射换热

B.对流换热

C.导热和热辐射

（）换档电磁阀通电后，其泄油口关闭，油压增高并作用在换档阀上。

A.霍尔式

B.常开式

C.电磁感应式

D.常闭式

S390设备时钟板提供（）个标准的B.ITS时钟输入接口以及（）个8kHz的线路定时输入频率基准，并且能对输入的频率基准进行保护倒换。