读下图,长江四条支流,汇入长江按由上而下顺序是         A ①

读下图,长江四条支流,汇入长江按由上而下顺序是

 

 

 

 

A ①②③④         B  ④③②①         C  ①③②④        D  ②③①④

 

答案

B   

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