请教一道sc correction的题目，求大神解答

candice1127 · 发表于 2017-2-1 13:00:20

      [size=10.000000pt]Since the start of the space age, more and more littering has occurred in orbits near Earth, oftenbecause the intentional discarding of lens caps, packing material, fuel tanks, and payload covers.  [size=10.000000pt](A) more and more littering has occurred in orbits near Earth, often because
(B) orbits near Earth have become more and more littered, often from
(C) orbits near Earth became littered more and more, often resulting from
(D) there have been more and more littering of orbits near Earth, often because of(E) there had been littering more and more of orbits near Earth, often with
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[size=13.3333px]如何做出正确选项呢，C的时态我不觉得有什么问题啊，答案是B
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[size=13.3333px]谢谢！

alzn2765 · 发表于 2017-2-1 18:02:23

排下版？

初中英语：since是完成时时间状语指示词

茄子要加油 · 发表于 2017-2-1 18:54:04

说下我的解题思路，如有疏漏欢迎G友指出。看到Since知道用完成时，因为since不是引导主句的所以就不看了，接下来看后边一大串是名词，也就不看了。这个时候我第一反应划线句子一开始应该引出一个名词作主语B、C是可以的，根据完成时，选B

[Helr题库] 请教一道sc correction的题目，求大神解答

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[Helr题库] 请教一道sc correction的题目， 求大神解答

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[Helr题库] 请教一道sc correction的题目，求大神解答