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【題目】 黑龍江和松花江水量豐富而且含沙量小的主要原因是

A地勢平坦,支流眾多 B氣候濕潤,森林茂密

C氣溫較低,地勢平坦 D降水豐沛,草原遼闊

【答案】B

【解析】

試題分析:黑龍江和松花江水量豐富而含沙量小的主要原因是氣候濕潤,森林茂密,植被生長好,水土流失差

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