棉花姑娘(节选)
ㅤㅤ青蛙跳来了。棉花姑娘高兴地说:“请你帮我捉害虫吧!”青蛙说:“对不起,我只会捉田里的害虫,你还是请(1)选文中加点的“别”字共有
(2)读选文中画“_____”的句子,应读出
①急切
②惊奇
③失望
(3)青蛙为什么不帮助棉花姑娘捉害虫?
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