题目

—I’m sure Andrew will win the first prize in the final. —I think so. He _________ for it for months. A. is preparing              B. was preparing    C. had been preparing    D. has been preparing 答案：D 解析: D。根据句中的…will win the first prize in the final可知，决赛还没有举行，所以下文谈到的“准备”指的肯定是从过去一直持续到现在的情况，故用现在完成进行时。如图，给出了过直线外一点作已知直线的平行线的方法，其依据是（ ）A．同位角相等，两直线平行B．内错角相等，两直线平行C．同旁内角互补，两直线平行D．两直线平行，同位角相等