“生物圈Ⅱ号”实验的进行，说明人类可以建造一个适合人类生存的环境。[ ]
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The man followed the boy _________ what he wanted _________ in the small room.[ ]
A. to see; to do
B. to see; do
C. see; to do
D. see; do
缩短基本时间的方法有哪些？
