草履虫的表膜不具有的功能是A．保护B．呼吸C．排泄D．消化-七年级生物

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• 下列关于单细胞的叙述，错误的是A．整个身体由一个细胞构成B．能够完成呼吸排泄和对外界刺激发生反应等各项生命活动C．不能独立完成生命活动D．大多数在水域环境中生活-七年级生物
• The harder the workers work, _____.[ ]A. the more money they'll get B. they'll get them mo
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• 下图是某同学在显微镜下观察到的草履虫图像，则草履虫在临时装片上的状态是-七年级生物
• James with the Greens the White Tower Park if it tomorrow.A．are going to; isn’t rainyB．are going to;
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• ---So you were in the supermarket __________ you heard a strange sound, right?---That’s true. I ran
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• We will go climbing _______ it ________ tomorrow.A．if, rainsB．if, will rainC．unless, rainsD．unless,
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• 草履虫依靠尾部的摆动在水中运动。-七年级生物
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• 使用显微镜观察草履虫时，经常在临时装片的培养液中放一些棉丝，其作用是（）A．限制草履虫运动B．增加营养C．便于计数D．增加温度-七年级生物
• You will have fun if you _____tomorrow.[ ]A. go hikingB. will go hikingC. went hikingD. are going hi
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