第15题: [单项选择]What does the mother advise her son to do A. To go on reading. B. To take some medicine. C. To read in bed. D. To stop to have a good rest. 参考答案:D 答案解析:[听力原文]
A: I’ve got a pain here, Mum.
B: Why not stop reading and take a good rest
A: Yes, I will
第24题: [单项选择]某学龄儿童采用0.05%NAF漱口水预防龋齿,其使用方法应为( ) A. 每月含漱一次,每次10ml,含漱1分钟 B. 每周含漱一次,每次10ml,含漱1分钟 C. 每天含漱一次,每次10ml,含漱1分钟 D. 隔周含漱一次,每次10ml,含漱1分钟 E. 隔天含漱一次,每次10ml,含漱1分钟 参考答案:C 答案解析:[解析] 氟化钠漱口水常用浓度为0.05%和0.2%,浓度越高应用间隔时间越长。0.05%氟化钠漱口水用于每天含漱一次,0.2%氟化钠漱口水用于每周含漱一次。
第32题: [单项选择]When is the heavy traffic hour on most city streets according to the passage( ). A. During 9:00 a.m. and 5:00 p.m. from Monday to Friday. B. Between 8:00a. m. and 6:00 p.m. from Monday to Friday. C. In the period of 9:00 a.m. and 5:00 p.m. every day. 参考答案:A 答案解析:
周一到周五的9:00—5:00最为繁忙。故本题答案为A。
第33题: [单项选择]用于监视交流系统接地的装置称为()。 A. 交流绝缘监视装置 B. 接地保护装置 C. 过电压保护装置 D. 信号装置 参考答案:A