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People make old things into new things. This is called recycling. People can recycle only some materials(材料)—paper, plastic, clothes, computers, mobile phones and metal(金属). But food cannot be recycled.
How do students recycle at school? Students make recycling boxes to collect cans(金属罐), paper, plastic bottles and bags. They try to use recycled things. They usually use plastic bottles to make toys. They use waste paper to make boxes…
Recycling is good for the environment. It is also good for our health. Let’s start from now on!
1．Recycling is to make new things into old things.2．Paper, plastic and food can be recycled.
3．Students use recycled things to make some other things.
4．To protect the environment, we should try to recycle.
5．The best title of the passage is “No recycling”.
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
