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身体延长的鱼如鳗鲡、黄鳝、带鱼的鳞片一般都()。?

单选题
2021-12-28 23:14
A、A、较发达
B、B、是圆鳞
C、C、退化或消失
D、D、是较原始的鳞片
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正确答案
C

试题解析

标签: 鱼纲 生物学
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