求助大全163

meckychen · 发表于 2010-4-29 11:12:57

1.Because Halley’s comet changes orbit slightly during the seventy-six-year interval between passing close to Earth, it may veer onto a collision course with a planet sometime in the distant future.
(A) between passing
(B) of passing
(C) between its passes
(D) of its passes
(E) as it passes
Ans：C
Why？
Thanks

meckychen · 发表于 2010-5-5 14:01:22

myungryong · 发表于 2010-5-5 14:02:56

同问~~

wwhappy · 发表于 2010-5-11 23:56:14

希望NN快来解答啊！！！

小sai爱mj · 发表于 2011-4-11 19:29:04

求助大全163

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