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Of all the things we eat and drink, water is the most important. Many people don’t understand this, but it is true.
People can live without food for a long time, but they may be ill or dead if they don’t have water for two or three days.
Many people drink water when feel thirsty. They don’t understand how much water a man’s body needs. And they don’t drink a lot, especially in hot weather. A man’s body contains 65% to 70% water. If we don’t have a lot of water, we may feel tired and become ill.
To keep healthy, we need to drink about eight glasses of water a day. So let’s drink more water during the day and stay healthy.
1．The underlined word “without” means “______” in Chinese. ( )| A．没有 | B．拥有 | C．携带 |
| A．tired | B．thirsty | C．ill |
A． | B． | C． |
| A．water is very important to us |
| B．people may not be ill or dead without water for a long time |
| C．we can drink a lot of water when our bodies need water |
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
