Owing to no hotel to book, I have to ______ with my friend during my visit to Swiss.
A. lodge
B. entertain
C. register
D. fulfill
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In recent years, housework that once depressed many women has been much easier by electrical ______。
A. facilities
B. appliances
C. instruments
D. equipment
The four hours' examination made him so tired that he ______ a sigh of relief the instant the bell rang.
A. breathed
B. spit
C. bred
D. uttered
老师在考试前跟学生说,考试作弊不仅将计零分,而且将计警告处分,旨在避免学生的考试作弊行为,这种强化属于下列哪种类型?()
A. 积极强化
B. 惩罚
C. 消极强化
D. 自然消退
下列善治肺胃火盛所致的口舌生疮的实火证类非处方中成药是
A. 黄连上清丸
B. 清胃黄连丸
C. 复方牛黄清胃丸
D. 上清丸
E. 芩连片