地球村,人人爱。你植树,我植树,大地绿起来;你栽花,我栽花,花开香万家;你种草,我种草,人人搞环保。
1.儿歌中说了_______种爱护地球的办法。有_______、_______和_______。你还有什么好的办法?_________________
2.照样子,仿写句子。
你植树,我植树,大地绿起来;
你________,我________,___________起来。
3.这首儿歌告诉我们:______________。

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

