题目

下列各式中与a-b-c的值不相等的是() A . a-(b+c) B . a-(b-c) C . (a-b)+(-c) D . (-c)-(b-a) 答案:BA good listener takes part in the conversation, ______ ideas and raising questions to keep the talk flowing.A.havingB.understandingC.offeringD.supporting
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