问题 单项选择题

患者,男性,33岁,结核后支气管扩张症伴咯血,使用垂体后叶素是利用的机制是()

A.凝血

B.明显减少肺血管收缩

C.肺小动脉收缩,减少肺血流量

D.对血小板的影响

E.对患者有镇静作用

答案

参考答案:C

选择题
阅读理解

阅读理解。

     A newspaper in Helsinki, Finland, recently published a cartoon of a baby with a mobile phone, telling

his parents that his diaper (尿布) needed changing. But it's hardly a joke. Helsinki is home to Nokia, the

mobile-phone maker. It's one of the most "mobile" cities in the world: About 92 percent of its households

have at least one mobile phone. And the kids start young.

     "A relatively normal age to get a mobile phone is now 7," says Jan Virkki, marketing manager for a

mobile-phone company. Among the second graders at the Kulosaari Elementary School, the most popular

object of desire this year is not a Barbie or a Gameboy. It is a Nokia mobile phone with a picture of their

own choice on the screen.

      "One of the first things we discuss when school starts is the rules for mobile phones," says Tiia Korppi,

a teacher. Among the rules: You have to put it away out of sight. You cannot turn it on. You cannot send

text messages to your friends, or play amusing tunes (令人发笑的曲调) in class, or call your parents or

call for a pizza during history.

1. The author uses the newspaper cartoon to show that _____.

A. he is good at telling jokes

B. he cares much for children

C. mobile phones are toys for new-born babies

D. mobile phones are widely used in Finland

2. The passage is mainly about _____.

A. different uses of mobile phones

B. a successful mobile-phone maker

C. effects of mobile phones on children

D. school rules for the use of mobile phones