—The country has already sent up an unmanned spacecraft to the moon.—Yes. Chang’e I to the

—The country has already sent up an unmanned spacecraft to the moon.
—Yes. Chang’e I to the moon last October.
A. has been sent
B. has sent
C. was sent
D. sent

A. has been sentB. has sent (答案→)C. was sentD. sent解析：考查被动语态。“（咱们）国家已经发射了一颗月球人造卫星。”“是的。嫦娥一号是去年10月被发射的。”Chang’e I与send之间是被动关系，故用被动语态，排除C、D；根据last October可知，用一般过去时。故选C。

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