第25题: [单项选择]{{B}}Questions 11 to 18 are based on the conversation you have just beard.{{/B}} A. People are too noisy. B. The show is very boring. C. The room is too small for the audience. D. The play is difficult for him to understand. 参考答案:C 答案解析:[听力原文]
M: This hall is so crowded that I can hardly hear and see the stage.
W: I don’t understand
第30题: [单项选择]通过一段简单管路把高位水槽内的水放出,管路上有一阀门。若关小阀门,却发现管内流量没有明显变化,这说明()。 A. 该管路直管很短,直管流动阻力很小,或关小阀门前阀门开度很小 B. 该管路直管很长,直管流动阻力很大,或关小阀门前阀门开度很小 C. 该管路直管很短,直管流动阻力很小,或关小阀门前阀门开度很大 D. 该管路直管很长,直管流动阻力很大,或关小阀门前阀门开度很大 参考答案:D