第5题: [单项选择]What’s Mr. Wang doing A. He’s speaking to someone else on the telephone. B. He’s answering someone’s questions. C. He’s working in his lab. 参考答案:A 答案解析:[听力原文] M: Hello, May I speak to Mr. Wang F: Hold on, please. He’s answering another call.
第26题: [单项选择]脑栓塞最常见的病因是（） A. 慢性心房纤颤 B. 心房粘液瘤 C. 脂肪栓塞 D. 癌栓 E. 来源不明 参考答案:A
第27题: [单项选择]All the communists ______the people instead of being served by the people. A. are supposed to serve B. are opposed to serving C. are subjected to serving D. object to serving 参考答案:A 答案解析:be supposed to do 指在别人看来“应当，应该”。而be opposed to doing 和object to doing 均作“反对，不赞成”解。be subjected to do
