The little girl was afraid of having her bad tooth pulled out. The dentist tried hard to put her _____________.A.at lastB.at handC.at easeD.at least
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C解析试题分析：短语辨析。A最后，终于；B在手边，在附件；C自在，安心；自由自在；D至少；句意：那个小女孩害怕拔牙。所以牙医努力让她安心。故C正确。考点：考查短语辨析
点评：本题考查了介词at的短语辨析。要根据上下文的语境来进行短语的词义辨析。