问题 单项选择题

婴幼儿胸部正位摄影,焦-片距一般为()。

A.45cm

B.60cm

C.100cm

D.150cm

E.200cm

答案

参考答案:C

解析:

胸部的前后径与左右径都较大,为避免影像过度放大,焦-片距宜远,一般肺像成人用150~180cm,婴幼儿胸部正位摄影,焦-片距一般为100cm,成人心脏片不<180cm。

阅读理解

阅读理解。

     Most people have ambitions. An ambition is something we want to do, want to be or want to have. A

student's ambition, for example, might be to pass his or her exams and then get a good job. An athlete's

ambition could be to win an important competition. A businessman's ambition is usually to make a lot of

money.

     Not all ambitions are about success at work, however. Some people just want to be good people, have

a family or help others.

     Ben's ambition is to be a sports writer. He writes the sports reports for his class newspaper. He likes

most sports, and swimming and football are his favorites. Trudy's ambition is to be a concert pianist. She

is very serious about it and practices every day with her best friend Lily. It is very important to her.

     Harry's ambition changes every day! One day he wants to be an astronaut. The next day he wants to be

a pop singer. The next day he wants to drive a racing car. His mother would be happy if his ambition was

to get up in time for school every day!

     What's your ambition?

1. What's an ambition?

_________________________________________________________

2. What's a student's ambition.

_________________________________________________________

3. Does Ben want to be a music writer?

_________________________________________________________

4. Are all the ambitions about success at work?

_________________________________________________________

5. Does Harry get up in time for school every day?

_________________________________________________________

选择题