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【单选题】
层门锁的有效设置,是防止( )事故的重要措施。A.
撞击
B.
坠落
C.
电击
D.
机械伤害
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举一反三
【单选题】According to the author, where does the happiness of scientists lie?
A.
It lies in a sense of fulfillment.
B.
It lies in their rich imagination.
C.
It lies in the increase of their knowledge.
D.
It lies in the opportunity to continue the search.
【单选题】Happiness is contrasted with eye color because happiness __________.
A.
does not have a color
B.
is not physical
C.
cannot be seen
D.
may not last
【单选题】According to the author, where does the happiness of scientists lie?
A.
It lies in a sense of fulfillment.
B.
It lies in their rich imagination.
C.
it lies in the increase of their knowledge.
D.
It lies in the opportunity to continue the search.
【单选题】In the world of the comics, happiness depended on______.
A.
a crazy sense of humor
B.
a love of life
C.
a little faith and luck
D.
cunning and courage
【单选题】I want to ________ the secrets of nature and apply them for the happiness of man.
A.
bring in
B.
bring out
C.
bring up
D.
bring about
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