87.Had the governments and scientists not worked together, AIDS-related deaths _______ since their highest in 2005.
A. had not fallen B. would not fall
C. did not fall D. would not have fallen
【答案】D。解析:根据题干从句中had置于句首可知,此处为虚拟语气中连词if省略情况。由从句中谓语动词had not worked(had done)可知,是对过去情况的假设,所以主句中的谓语动词应用would/could/might/should have done来表示对过去情况的假设。故选D。
88.It was the training _____ he had as a young man _____ made him such a good engineer.
A. what; that B. that; what C. that; which D. which; that
【答案】D。解析:此题考查的强调句型中包含一个定语从句。Which引导的定语从句,修饰被强调部分the training。把修饰部分he had as a young man去掉,剩余部分为强调句,强调主语the training,故用it was ... that 句型强调,句意为:正是他年轻时候参加的训练使得他成为这样一名优秀的工程师。故选D。
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