大全 163， 关于between

kiwii

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（C）

(E) as it passes

Between 的词性是介词或副词，C项怎么可能对呢？另外C也不如A简洁

请大家指教，谢过了

gmat700+

我觉得between its passes close to Earth是介词短语做定语，修饰interval的。

passing强调当时通过的那个瞬间动作，pass就是一般的通过。而且，当一个动词有自己的名词形式时，不用动名词。

kiwii

哦，对了。那是一个its passes, 所以pass是名词在这里。

Thanks a lot!