题目

某企业2010年底缴税40万元,2012年底缴税48.4万元,设这两年该企业缴税的年平均增长率为,根据题意,可得方程_______________. 答案:40(1+x)2=48.4There are some dangerous fishes in this river, and I've warned Jack ________ here.A.not to swimB.to not swimC.swim not toD.to swim not
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