大全-163

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.fficeffice" />

(A) between passing

(B) of passing

(C) between its passes

(D) of its passes（C）

(E) as it passes

请问a哪里错了？