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Every day we make a lot of rubbish in the city. It’s not easy to get rid of (去除) the rubbish. We can burn it. But it usually makes a lot of smoke. It’s very bad for the air and our health. When the smoke goes up to the sky, it can make the rain dirty.
We can also put the rubbish under the ground. But it’s not a good method (方法), either. We have to find a place far away from the city. The rubbish under the ground can make the water and land dirty. It’s bad for our Earth.
To make a better Earth, we should make less (更少的) rubbish. We can recycle glass and paper. We can bring our own shopping bags and stop using plastic bags.
1．It’s easy to get rid of rubbish.2．If we burn the rubbish, it usually makes a little smoke.
3．It’s a good method to put the rubbish under the ground.
4．The rubbish can make air, water and land dirty.
5．We can recycle glass and paper to make less rubbish.
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
