题目

Professor Jordon is well known for his _____ into the habits of the common housefly. 　　A. examination    B. introduction 　　C. research       D. expression 答案：C 解析: research into对...研究：1)(作动词用)He is researching into the reading problems of young school children.2)（作名词用）to carry out a research(=some research)into the causes of brain damage.(对大脑损伤原因进行研究)。 　　研究可译为make researches into, make a study of 或直接用动词study vt或research into (a problem etc.).

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