A.鱼用鳃呼吸,能靠游泳获取食物和防御放害,与其在水中生活相适应 |
B.青蛙能用肺呼吸,皮肤辅助呼吸,能真正适应陆地生活 |
C.蜥蜴的生殖和发育摆脱了对水环境的依赖,是它能终生生活在陆地上的主要原因 |
D.鸟体表覆羽,前肢变为翼,有气囊辅助肺呼吸,与其飞行功能相适应 |
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2