第20题: [单项选择]Grimm’s Law can be expressed in terms of natural classes of speech sounds: voiced aspirates become unaspirated; voiced stops become voiceless; voiceless stops become ________.( ) A. affricates B. fricatives C. voiced D. aspirates 参考答案:B
第30题: [单项选择]A. She has probably some free time this week. B. She is probably not coming on Sunday. C. She’s probably back at home. D. She has probably tried to call. 参考答案:D 答案解析:[解析] W: I don’ t know why we haven’t heard anything from Jane about Sunday. M: We’ve been in