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[Sentence Correction]
试题详情
题目：
In the major cities of industrialized countries at the end of the nineteenth century, important public places such as theaters, restaurants, shops, and banks had installed electric lighting, but electricity was in less than one percent of homes, where lighting was still provided mainly by candles or gas.
选项:
A、 electricity was in less than one percent of homes, where lighting was still
B、 electricity was in less than one percent of homes and lighting still
C、 there were less than one percent of homes with electricity, where lighting was still being
D、 there was less than one percent of homes that had electricity, having lighting that was still
E、 less than one percent of homes had electricity, where lighting had still been
答案:
A
提问：
第一次选了c第二次错选了e，始终对这题的时态不是很理解，感觉gmat对于时态的考核是比较弱化的，什么情况下可以把时态作为一个决定性的排除因素呢？还有过去完成时的使用错误在这里应该怎么判断呢？
解答：
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