21.After a night of wrestling with his________, he decided to go to the police office to give himself up.
A. consensus B. conscience C. consciousness D. convention
【答案】B
【解析】
【详解】考查名词词义辨析。句意：在与自己的良心斗争了一整夜之后，他决定去警察局自首。A. consensus共识；B. conscience良心，良知；C. consciousness意识，知觉；D. convention习俗，常规，惯例。根据空后he decided to go to the police office to give himself up.可知，此处是与自己良心作斗争。故选B项。
22.The mother never criticized her children, but used praise to________their best.
A. put out B. give out C. pick out D. bring out
【答案】D
【解析】
【详解】考查动词短语辨析。句意：那位母亲从不批评她的孩子，而是用称赞使孩子们表现出最佳状态。A. put out扑灭，生产，出版，广播；B. give out用完，耗尽；C. pick out精心挑选，认出；D. bring out使显现，使表现出。分析句子可知，but表前后转折，结合句意，应该是用称赞使孩子们表现出最佳状态。故选D项。
