. 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),題中主語Chinese astronaut Wang Yue為單數(shù),根據(jù)語境是被選為志愿者之一,所以用現(xiàn)在完成時的被動語態(tài)。故選A。
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