题目

逻辑推理是化学学习常用的思维方法，下列推理正确的是………………………[     ]A．酸性溶液的pH都小于7，所以酸溶液pH一定小于7B．分子是构成物质的微粒，因此物质都是由分子构成的   C．水是纯净物，所以海水也是纯净物D．中和反应有盐和水生成，因此有盐和水生成的反应一定是中和反应 答案：A 完形填空 　　“Where is the university?”This is a question that many visitors to Cambridge(剑桥)ask．But no one can give them a 　　1　　 answer, for there is no wall to be found 　　2　　 the university．The university is the city．You can find classroom buildings, 　　3　　, museums and offices of the university all over the city．And most of its members are the students and 　　4　　 of the thirty-one colleges． 　　Cambridge was already a 　　5　　 town long before the first students and teachers arrived 800 years ago．It grew up by the river Granta, and the river was once 　　6　　 the Cam．A 　　7　　 was built over the river as early as 875．So the town got its name“Cambridge”． 　　In the fourteenth and fifteenth centuries more and more land was used for college buildings．The town grew much 　　8　　 in the nineteenth century after the opening of the railway in 1845．Cambridge became a 　　9　　 in 1951 and now it has a population of over 100,000．Many young students in other countries 　　10　　 to study at Cambridge．Thousands of people from all over the world come to visit the university town．It has become a famous place all around the world． (1) [　　] A． true B． clear C． right D． real (2) [　　] A． around B． in C． near D． by (3) [　　] A． cinemas B． parks C． zoos D． libraries (4) [　　] A． parents B． farmers C． workers D． teachers (5) [　　] A． interesting B． usual C． developing D． common (6) [　　] A． said B． called C． spoken D． talked (7) [　　] A． bridge B． building C． station D． house (8) [　　] A． smaller B． slower C． faster D． cleaner (9) [　　] A． city B． college C． university D． country (10) [　　] A． stop B． hate C． hope D． need