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[Sentence Correction]
试题详情
题目：
The features of the floor of the Kasei Valles on Mars look just like those at the base of Antarctic ice streams, so it suggests that possibly it was flowing ice that carved the giant Martian channels previously attributed to cataclysmic floods.
选项:
A、so it suggests that possibly it was flowing ice that
B、a suggestion that flowing ice may have
C、to suggest flowing ice as possibly having
D、suggesting that flowing ice may have
E、which is suggestive of flowing ice having possibly
答案:
D
提问：
A中的第二个it was..不能当作强调句来看进而视作为正确选项吗？D是正确选项可以理解，但却A为啥错了？麻烦老师简明扼要地解释一下～
解答：
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提问：
A中的第二个it was..不能当作强调句来看进而视作为正确选项吗？D是正确选项可以理解，但却A为啥错了？麻烦老师简明扼要地解释一下～
解答：
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阅读2192
提问：
不知道如何选择。。A是因为主语没有变而不应该再用it吗？
解答：
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