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Water is very important to people. We must drink water every day. We can’t live without water.
At home, we use water to wash clothes, to wash dishes, to cook meals, to clean the floor, to brush our teeth, to have a bath and so on.
At work, people use water to put out fires(灭火), to grow vegetables, to make things in factories and so on. We also can swim on the earth. Water is important to us, isn’t it?
However, there isn’t much water on the earth. It is very valuable(贵重的). We must save it. And please remember a date, March 22nd, it’s World Water Day.
1．What is water like to people? ( )| A．It’s very heavy. | B．It’s very dangerous. | C．It’s very important. |
| A．We can take a bath. | B．We can put out fires. | C．We can make things in factories. |
| A．Because there isn’t much water on the earth. | B．Because we need water to help us crying. | C．Because we have a lot of water on the earth. |
| A．Yes,we can. | B．No, we can’t. | C．Of course we can. |
| A．It’s May 1st. | B．It’s March 22nd. | C．It’s January 1st. |
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
