______ that she was going off to sleep, I asked if she’d like that little doll on her bed.A. Seeing B. To see C. See D. Seen 答案:A 解析考查非谓语动词的用法。本句的主语是 I,I 与 See 的意义的逻辑关系是主动,也就是Seeing 才能表示主语与非谓语的“主动”的逻辑关系。使用最简单的滑轮组将物体提升1米,拉力需要拉动绳的自由端移动
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A.1米B.2米
C.3米D.上述情况都有可能