问题
单项选择题
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
答案
参考答案:D
解析: 各项的意思是:effective有效的;efficient有效的;significant有意义的,重要的;reasonable合理的,理智的。划线单词sensible的意思是:明智的。句意是:我们有责任确保国家的继续繁荣,而最明智的方法就是投资基础科学研究。所以,答案是D。