试题与答案

具有净化水源,蓄洪抗旱的生态系统是()A、海洋生态系统 B、淡水生态系统 C、湿地神态系

题型:单项选择题

题目:

具有净化水源,蓄洪抗旱的生态系统是()

A、海洋生态系统

B、淡水生态系统

C、湿地神态系统

D、草原生态系统

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A, B, C, D

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