All around the world people live in houses made in different ways. Some people live in a rainforest (雨林) and their home is a tree house. People make the floor in the bark (树皮) of a big tree and sleep on it. The branches (树枝) of the big tree are the walls. The leaves (叶子) of the big tree make the roof (屋顶). There are no beds or chairs in the tree house. There are no televisions or computers. It's always very hot in the rainforest. Sometimes there are floods (洪水). The people are away from the flood water, up high in a tree house. The tree house is a good place for people to live.
1.People make tree houses in the rainforest. (2.The branches of the big tree are the roof of a tree house. (
3.People sleep on beds in the tree house. (
4.People can't watch TV in the tree house. (
5.It is cold in the rainforest. (

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

