There isn't water or air on the moon,and ___ man can't live on it.A.a B.the C.one D./

d泛指人类

D,表人类

D
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not to smoke. Don’t copy your friends and other people who smoke. there was no name on it, so when I arrived home, I rang up the

D。/
不加冠词，单数，表示一类人，这里用单数MAN表示人类。

D。/
这里man指人类

D./
man单独使用泛指人类

D