【題目】So far, the moon ________ by man already.
A.is visited
B.will be visited
C.has been visited
D.was visited

【答案】C
【解析】句意：到目前為止，月球已經(jīng)被人拜訪過(guò)。so far到目前為止，通常用現(xiàn)在完成時(shí)，moon與visit之間構(gòu)成被動(dòng)關(guān)系，故用現(xiàn)在完成時(shí)的被動(dòng)語(yǔ)態(tài)：have/has been+過(guò)去分詞。因此答案是C。

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