15.淡水fresh water.

分析 淡水fresh water

解答 答案是fresh water;考查詞義識記;fresh water淡水;如:Rivers are fresh water.河流通常是淡水.

點評 對于單詞短語的識記,要從詞義著手,理解詞性和常見用法或搭配,并能在語境中靈活運用.

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