We have a responsibility to ensure our nation’ s continued prosperity and the most sensible way to do this is by investment in b

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问题 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.

选项 A、effective
B、efficient
C、significant
D、reasonable

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。
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