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.).要从苯酚的乙醇溶液中回收苯酚，合理的操作顺序是（ ）①蒸馏②过滤③静置分液④加入足量Na⑤通入足量CO2⑥加入足量NaOH溶液⑦加入乙酸和浓H2SO4的混合液后加热⑧加入足量的FeCl3溶液．A．④⑤③B．⑦①C．⑧②⑤③D．⑥①⑤③