下列属于细胞周期非特异性药物的是（）。
A.长春新碱
B.羟基脲
C.阿糖胞苷
D.丝裂霉素
E.氟尿嘧啶
参考答案：D
She made a _____ in our plan to play basketball when it started to rain. [ ]
A. turn
B. switch
C. point
D. exchange
Woman: Is the rescue crew still looking for survivors of the plane crashMan: Yes, they have been searching the area for hours, but they haven't found anybody else. They'll keep searching until night falls.Question: What do we learn from the conversation
A．All the passengers were killed.
B．The plane crashed in the night.
C．No more survivors have been found.
D．It's too late to search for survivors.
