下列说法正确的是{"A":"\u86af\u8693\u6709\u5e72\u71e5\u7684\u4f53\u58c1\uff0c\u7528\u6765\u547c\u5438","B":"\u514d\u5_刷题宝

题干

下列说法正确的是（）

A：蚯蚓有干燥的体壁，用来呼吸

B：免子有发达的犬齿，用来撕食物

C：青蛙有保护色，利于躲避天敌

D：鸟类有流线型身体，利于飞行

上一题下一题 0.0难度选择题更新时间:2018-07-27 09:09:10

答案(点此获取答案解析）

C,D

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