The children will climb the hill if it ________tomorrow.A．won’t rainB．didn’t rainC．doesn’t rain D．no

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• 为探究草履虫对刺激的反应，一同学制作了如下图所示临时装片，草履虫将A．从左向右运动B．从右向左运动C．不运动D．A、B、C都可能-七年级生物
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• 单细胞个体都很微小，跟人类没有任何关系。-七年级生物
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