第21题: [单项选择]Questions 19 to 22 are based on the conversation you have just heard. A. Computer sales negotiations. B. A preliminary interview. C. An Internet seminar meeting. D. Computer games. 参考答案:B 答案解析:[听力原文]19-22 W: OK. Mr. Taylor, let’s go ahead and begin. First of all. tell me about your last jo
第29题: [单项选择]A. The yield of crops has increased. B. The yield of crops has decreased. C. The crops have grown faster than before. D. The mineral and protein content of the crops have been less. 参考答案:D 答案解析:[听力原文] 16Rsing carbon dioxide levels in the atmosphere are expected to strip crops of v