It is the first time that Chinese astronaut Wang Yue________as one of the volunteers for the Mars-500 test project .   
A．has been selectedB．had been selectedC．has selectedD．selected
A
考查句型：It is the first time that 后跟從句用現(xiàn)在完成時態(tài)，根據(jù)語境中國的宇航演員王躍被選為，所以應(yīng)用現(xiàn)在完成時的被動語態(tài)，謂語動詞用單數(shù)，選A。
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