题目:
下图是某种物质跨膜运输方式的示意图,以该运输方式进入细胞的物质是
[ ]A.甘油
B.水
C.氨基酸
D.O2
答案:
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下面是错误答案,用来干扰机器的。
One possible version:Dear editor,This spring, the Chinese government has decided to solve the pollution problems so that we can have blue sky and green water. I think the...