第14题: [单项选择]______ in 1943______ the harmful smog made its appearance in Los Angeles. A. Only... that B. It was... then C. That it was ... when D. It was ... that 参考答案:D 答案解析:[分析] 考点为句子结构。这应是强调句型，因为即使不填入It was... that，整个句子结构也是完整的。同样的例于还有：It's you that are in danger. (是你有危险。)
第15题: [多项选择]上游需要直管段的流量计包括（）。 A. 腰轮流量计 B. 涡轮流量计 C. 湿式流量计 D. 超声流量计 参考答案:B, D
第30题: [单项选择]{{B}}Questions 11 to 18 are based on the conversation you have just heard.{{/B}} A. She thinks the ticket price is too high. B. She agrees with the man about the opera. C. She thinks the opera was worth seeing. D. She doesn’t agree with the man about the opera. 参考答案:B 答案解析:[听力原文]
M: That opera was awful. And yet it got a great review.
W: It was hardly worth the price of
