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问题 单项选择题

皮内注射，下述步骤哪项是错误的( )。

A．选用1ml注射器和4.5号针头
B．作皮试前必须询问过敏史
C．注射部位皮肤忌用碘酊消毒
D．进针时，针头与皮肤呈5°角
E．拔针后用棉签轻按针刺处

答案

参考答案：E

解析： 皮内注射法

多项选择题

建筑装饰装修工程所使用的材料在运输、储存和施工过程中，必须采取有效措施防止（）.

A.振动

B.撞击

C.损坏

D.变质

E.污染环境
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单项选择题

If you are like most people, your intelligence varies from season to season. You are probably a lot sharper in the spring than you are at any other time of the year. A noted scientist, Ellsworth Huntington (1876-1947), concluded from other men’s work and his own among peoples in different climates that climate and temperature have a definite effect on our mental abilities.
He found that cool weather is much more favorable for creative thinking than is summer heat. This does not mean that all people are less intelligent in the summer than they are during the rest of the year. It does mean, however, that the mental abilities of large numbers of people tend to be lowest in the summer.
Spring appears to be the best period of the year for thinking. One reason may be that in the spring man’s mental abilities are affected by the same factors that bring about great changes in all nature.
Fall is the next-best season, then winter. As for summer, it seems to be a good time to take a long vacation from thinking!

One possible reason why spring is the best season for thinking is that ______.

A．all nature, including man, is growing then

B．it lasts longer than the other seasons

C．it is not too warm and not too cold

D．both B and C
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