A-A+
We have a responsibility to ensure our nation'
问题详情
We have a responsibility to ensure our nation"s continued prosperity and the most sensible way to do this is by investment in basic scientific research.
A．effective
B．efficient
C．significant
D．reasonable
参考答案
正确答案：D
解析：effective有效的；efficient能干的，效率高的；significant重要的；reasonable明智的，理智的。
