草履虫依靠下列哪种结构运动A．伪足B．表膜C．纤毛D．鞭毛-七年级生物

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• While I _ a Zhengjian Evening Paper inthe sitting room, the doorbell rang.[ ]A.was readingB.readC.is
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• 草履虫的运动是依靠()A．伸缩泡伸缩B．食物泡流动C．细胞质流动D．纤毛摆动-七年级生物
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• Tomorrow is Sunday. Jim will go hiking with his friends if it ________.A．isn’t rainB．doesn’t rain C．
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