棉花姑娘(节选)
啄木鸟飞来了。棉花姑娘说:“请你帮我捉害虫吧!”啄木鸟说:“对不起,我只会捉树干里的害虫,你还是请别人帮忙吧!”
1.这段写的是________与________的对话。2.啄木鸟为什么不帮助棉花姑娘捉害虫呢?( )
A.因为啄木鸟太忙了。 |
B.因为啄木鸟只会捉树干里的害虫。 |
棉花姑娘:_______________________
啄木鸟:______________________
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