问题
选择题
In the last twenty years, seven Canadian scientists _____ the Nobel prize!
A.won
B.had won
C.was winning
D.have won
答案
答案:D
题目分析:考查时态:句意:在过去的20年中,7个加拿大科学家获得了诺贝尔奖。时间状语是. In the last twenty years,一般和现在完成时连用,选D。