86. I don’t know________.
—Because he has to look after his mother.
A. why he is leaving B. why is he leaving
C. whether he is leaving D. whether is he leaving
【答案】A。解析:考查宾语从句的陈述语序,根据下文,因为他必须照顾她的母亲。可知上文提问的是原因,选项B为倒装语序,A表示我不知道他为什么离开了。因此A为正确答案。
87. He is very humorous, while his brother is rather serious. That is _________ their difference lies.
A. why B. where C. how D. when
【答案】B。解析:句意:他很幽默而他的哥哥很严肃.这儿就是他们的区别所在。题干空格后面是is 动词后面的表语从句,从句中lie为不及物动词,缺少地点状语表示"在于…地方/方面".名词性从句中,where在从句中可以充当地点状语,由此B为正确答案。
88. A growing anxiety is disturbing the public ________ the economy will continuously decline.
A. which B. that C. why D. where
【答案】B。解析:考查同位语从句。句意:越来越焦虑的情绪使公众不安,认为经济将持续衰退。分析句子可知________ the economy will continuously decline 是名词anxiety的同位语从句。解释说明前面的anxiety的内容。同位语从句中不缺少句子成分,所以用that来引导。因此B为正确答案。
89. The man _____ was a friend of mine.
A. that you just talked to B . whom you just talked to him
C. who you just talked to him D. which you just talked to
【答案】A。解析:此句中先行词在从句中作介词宾语,先行词相同意思用引导词充当,先行词指人。B中的whom和him重复,C中的who和him重复,故排除。本题选A。
90. His success is ______ by talent as by energy.
A. not so much B. so not much
C. much not so D. so much not
【答案】A。解析:本句是同级比较的否定结构,not so/as...as...;本句意为:他的成功多靠他的努力,而不是天才。故选A。
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