问题 选择题

一位援藏教师由北京抵达拉萨工作两年后,最可能出现的生理反应是(  )

A.白细胞增多

B.心率变慢

C.红细胞增多

D.血小板增多

答案

拉萨是高原地区,高原地区同平原地区相比,空气中氧的含量比较少.在这种环境下工作两年,可以增加血液中红细胞的数量和血红蛋白的含量,从而增强血液的供氧能力.

故选:C

单项选择题
阅读理解

阅读理解。

     In bringing up children, every parent watches eagerly the child's acquisition (学会) of each new skill-the

first spoken words, the first independent steps, or the beginning of reading and writing. It is often tempting

to hurry the child beyond his natural learning rate, but this can set up dangerous feelings of failure and states

of worry in the child. This might happen at any stage. A baby might be forced to use a toilet too early, a young

child might be encouraged to learn to read before he knows the meaning of the words he reads. On the other

hand, though, if a child is left alone too much, or without any learning opportunities, he loses his natural

enthusiasm for life and his desire to find out new things for himself.

     Parents vary greatly in their degree of strictness towards their children. Some may be especially strict in

money matters, others are sever over times of coming home at night or punctuality for meals. In general, the

controls imposed represent the needs of the parents and the values of the community as much as the child's

own happiness.

     As regards the development of moral standards in the growing child, consistency is very important in

parental teaching. To forbid a thing one day and excuse it the next is no foundation for morality (道德). Also,

parents should realize that "example is better than precept". If they are not sincere and do not practice what

they preach (说教), their children may grow confused and emotionally insecure when they grow old enough

to think for themselves, and realize they have been to some extent fooled. A sudden awareness of a marked

difference between their parents' principles and their morals can be a dangerous disappointment.

1. Eagerly watching the child's acquisition of new skills _____.

A. should be avoided

B. is universal among parents

C. sets up dangerous states of worry in the child

D. will make him lose interest in learning new things

2. In the process of children's learning new skills, parents _____.

A. should encourage them to read before they know the meaning of the words they read

B. should expect a lot from the children

C. should achieve a balance between pushing them too hard and leaving them on their own

D. should create as many learning opportunities as possible

3. The second paragraph mainly tells us that _____.

A. parents should be strict with their children

B. parental controls reflect only the needs of the parents and the values of the community

C. parental restrictions vary, and are not always for the benefit of the children alone

D. it's parents' and society's duty to control the children

4. The word"precept" in Paragraph 3 probably means "_____".

A. opinion

B. punishment

C. behavior

D. instruction

5. In terms of (在……方面) moral matters, parents should _____.

A. follow the rules them selves

B. be aware of the huge difference between adults and children

C. forbid their children to follow book teachings

D. always ensure the security of their children