题目

She was fortunate ______ to star in the film which ______ in the remote mountainous village.    A. having been picked out; was set     B. to have been chosen; set  C. to be picked out; was set           D. to have been chosen; was set   答案：D12．$\frac{1}{5}$的相反数是（　　）A．$\frac{1}{5}$B．-$\frac{1}{5}$C．-5D．5