987 163 （查询未果） 请教

163.
                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

明白这道题目应该是用between的，但是不明白A和C之间的区别 希望大虾指导。

多谢

To make it simple, whenever you can use a noun, don't use a verb + ing.

多谢多谢大哥哥指导

interval between 固定用法

且大全注释说between 的用法有两种

between...and..; between + Ns