第4题: [单项选择]博士这种称呼属于()。 A. 行政职务称呼 B. 技术称呼 C. 行业称呼 D. 时尚称呼 参考答案:B
第5题: [单项选择]The explorers in H. G. Wells's story were surprised to find that the "moon people" A. knew so much about the earth B. understood their language C. lived in so many underground cities D. were ahead of them in space technology 参考答案:C 答案解析:[解析] 根据第一段最后一句are you traveling...可知,答案选C。
第6题: [单项选择]肺内压在下列哪一时相内等于大气压 A. 吸气中和呼气中 B. 吸气中和呼气末 C. 吸气末和呼气中 D. 吸气末和呼气末 参考答案:D