在风速较小的巷道中二氧化碳在巷道的（）附近浓度较大。
A、顶板
B、底板
C、中心
D、四周
参考答案：B
— Have you _____ him to give up the job?
— No. He doesn't listen to me. [ ]
A. persuaded
B. suggested
C. advised
D. agreed
厚朴的功效为
A．行气化湿，降气止咳B．健胃消积，止咳化痰C．下气化痰，燥湿平喘D．行气燥湿，消积平喘E．和胃化湿，止咳平喘
