Two nuclear power stations ________ in the past ten years．

Two nuclear power stations ________ in the past ten years．

A.were set up

B.have set up

C.have been set up

D.have been setting up

答案及解析： C

解析：

看到时间状语in the past／last…（在过去的……时间里）时，这样句子的时态为现在完成时。