标题: 求助大全163 [打印本页] 作者: meckychen 时间: 2010-4-29 11:12 标题: 求助大全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. (A) between passing (B) of passing (C) between its passes (D) of its passes (E) as it passes Ans：C Why？ Thanks
