第4题:[单选题] 洗消粉混合比:一般传染病源为( ),重度污染为( ) (难) A. 1:500 1:200 B. 1:500 1:300 C. 1:800 1:200 D. 1:800 1:300 参考答案:A
第5题: [单项选择]{{B}}Questions 11 to 18 are based on the conversation you have just heard.{{/B}} A. He’ll tell her what she’s missed. B. He’ll take her to the next class. C. He’ll give her the now exam dates. D. He’ll try to bring her homework to class. 参考答案:A 答案解析:[听力原文]
W: I’m worried about those classes I missed when I was sick.
M: I’ll try to bring you up-to
第20题: [多项选择]一般来讲,债券因具有固定的( ),因而在二级市场上其市场价格相对于股票价格而比较稳定。 A. 票面利率 B. 偿还期限 C. 交易市场 D. 流通方式 参考答案:A,B 答案解析:[解析] 在二级市场上,债券因其利率固定、偿还期限固定.市场价格也较稳定;而股票无固定期限和利率,受各种宏观因素和微观因素的影响,市场价格波动频繁,涨跌幅度较大。