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Great changes         in China since 1978.
A.took placeB.has happenedC.have taken place D.happened
C

试题分析:take place 表示“发生、举行、举办”,一般指非偶然性事件的“发生”,即这种事件的发生一定有某种原因或事先的安排;happen作“发生、碰巧”解,一般用于偶然或突发性事件。句意:自从1978年以来,中国发生了巨大的变化。结合语境可知本句描述的是现在已经完成的动作,故用现在完成时态,选C。
点评:英语中的时态主要是借助于时间状语与上下文语境来进行判断。解答此类题型,首先要注意句子中的时间状语,如果没有则要通过分析上下文,结合语境来判断句子的时态。英语单词同汉语一样具有一词多义,一词多性的特点。解答此类问题首先要理解每个选项的基本含义,并注意交叉含义间的区别,了解其特殊用法,然后结合语境选择正确答案。
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