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
(E) as it passes
正確答案為(C)
但我不了解為什麼用between its passes..如用between不是該用between it and the Earth 比較合理嗎? 那為什麼(E)不對?
啊啊啊∼∼∼想不透
麻煩各位高手們解答了!!