大全 163， 关于between

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

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。

哦，对了。那是一个its passes, 所以pass是名词在这里。