According to Dr. Yo Jackson, a clinical child psychologist, some children are eager to know their parents'political views because _________.
A. it is a homework assigned by the school teachers.
B. children want to know more about their parents.
C. children want to be part of the nation's political system.
D. children are encouraged by the presidential debates on TV.
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_________, meteorologists hope to learn how to keep its damage to a minimum.
A. Lightning studied by
B. Lightning is studied by
C. The study of lightning
D. By studying lightning
_________ I like economies, I like sociology much better.
As much as
B. So much
C. How much
D. Much as
在口腔临床工作中，医务人员被感染的主要途径包括
A. 经污染器械伤害感染
B. 经术者手部伤口感染
C. 空气飞溅感染
D. 以上都包括在内
E. 都不包括在内
Dried leaves continue to hang on the branches of some deciduous trees _________ the new leaves appear.
A. until
B. by
C. that
D. from
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