问题: 英语请教
People around the world are becoming more and more ____ about the population explosion.
a、concerned
b、interested
c、involved
d、worrying
Benjamin O. Davis Jr. was ______ an assistant secretary of the Department of Transportation in 1971.
选项:
a、appointed
b、 employed
c、 designed
d、 discharged
解答:
a
be concerned about 担心某事
be interested in 对...感兴趣
be invovled in 涉及
be worried about 担心
a
任命
雇佣
设计
释放
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