A)I beg your pardon B)What do you mean C)You’re welcome. D)Mm， let me think. 参考答案： D
18(5.0分)5.0 A police officer claimed that the young man had attempted to _______ paying his fare. A) avoid B) reject C) refuse D) neglect 参考答案： A
19(5.0分) 5.0 If she wants to stay thin, she must make a ______ in her diet. A) change B) turn C) run D) bus 参考答案： A
20(5.0分) 5.0 This kind of material expands _______ the temperature increasing. A) to B) for C) with
D) at
参考答案： C