Do you often use plastic straws(塑料吸管)? You may use them to drink a lot of things, such as cola, juice or milk.
Most people throw their straws away after using them. Americans throw away 390 million plastic straws every day.
A lot of these straws go into the ocean. This is very bad for the ocean. Some animals eat them. They get sick. They can even die from this.
Some countries are trying to deal with this problem. The US and the UK both plan not to let people use plastic straws.
1.You may use plastic straws to eat cakes.2.Americans throwaway five million plastic straws every day.
3.A lot of these straws go into the ocean.
4.Some animals are hurt because of these straws.
5.Both the US and the UK plan to let people use plastic straws.
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