第19题: [单项选择]What will the man probably do next A. Keep watching TV. B. Get prepared for his exam. C. Go to take an exam. 参考答案:A 答案解析:[听力原文] F: You shouldn’t watch TV for a whole day! The exam is coming! M: Don’t worry. I’ve got
第20题: [单项选择]下列哪一项不是人造香精()。 A. 单离 B. 合成 C. 合成 D. 混合 参考答案:D