题目内容

The old scientist has made a great contribution          the moon.
A．in exploreB．to exploreC．exploreD．to exploring
D

试题分析：句意：这个老科学家已经对探索月球做出了很大的贡献。make a great contribution to (doing) sth. 意为“为某事做贡献”，to 在这里为介词，因此后面接名词、代词或动名词做宾语。
点评：英语中有很多固定的用法，诸如finish,enjoy,mind,practice等词后接动名词的形式，而would you like，ask,tell等词后都接动词不定式的形式，此类固定用法要求学生进行牢记。
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