Question

So far, the moon ________ by man already.  

A．is visited

B．will be visited

C．has been visited

D．was visited

Answer 1

C

解析试题分析：句意：到目前为止，人类已经登上了月球。So far 引导的句型，一般用现在完成时，本句也是被动语态。故选C。
考点：考查时态和语态。