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[Sentence Correction]
试题详情
题目：
Navigators have known for thousands of years that the ocean has variable currents, but it is only in the last half century that a reasonably clear picture has emerged of the patterns and causes of ocean currents.
选项:
A、a reasonably clear picture has emerged of the patterns and causes of ocean currents
B、a reasonably clear picture of the patterns of ocean currents and their causes have emerged
C、a reasonably clear picture emerged of ocean currents, their patterns and the causes of them
D、there have emerged a reasonably clear picture of the patterns of ocean currents and what caused them
E、there had emerged a reasonably clear picture of the patterns of ocean currents and their causes
答案:
A
提问：
金栩竹老师经常强调完成时的在句意表达的先后,我也觉得很好用。这题判断方法 因为have done的句意先后问题；所以不能用完成时，排除ABDE；尽管C的后面平行结构太差了；A的平行结构最好，但是完成时语态；老师说了had done最先发生，have done后发生，一般现在时最后发生；这里语义重心在后半句，前半句用了have known，则代表了先发生，后半句最好不要用语态，一般现在时最好；这里面老师可否再多说一点时态问题。
解答：
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提问：
当时就剩A和E，排除A的原因是觉得无法理解 has emerged of the patterns而确实觉得E语义比较通顺
解答：
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提问：
排除了CDE
感觉AB都不错
不知道选哪个
解答：
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提问：
一开始杀掉BCD 剩下AE 没读太懂AE在讲什么.. 就选了E.. 如果在考场上有压力的时候.. 怎么能够读懂且比出正确的答案呢?
解答：
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