1. Our school-run factory _____ various kinds of chemical devices last year.

　　A. turned into B. turned up

　　C. turned out D. turned off

　　答案： C

　　解析： turn into 转变，变成; turn up 卷起，发现; turn off 关掉; turned out 生产，制造.

　　2. Mary and I _____ the new college life soon, but Tom didn’t.

　　A. see to B. used to C. adapted to D. stuck to

　　答案： C

　　解析： see to 负责，注意，照料; used to 后面没有跟动词，所以不对。 adapt to 适应; stick to 坚持。

　　3. What he said was quite _____ , therefore, I would do everything to help him.

　　A. valuable B. principle C. reasonable D. superior

　　答案： C

　　解析： valuable 值钱的，有价值的; principle 原则，原理，主义; reasonable 有道理的; superior 较高的，优越的。 本句话的意思是说：他说的话有道理，因此，我愿竭力帮助他。