搜索
Liu Tao: Hi! Look, there are a lot of signs here.
Mike: Yes, they are public signs. 1．
Liu Tao: 2．. What does it mean?
Mike: 3．.
Liu Tao: Oh, I am thirsty. Can I drink some juice?
Mike: No, you can’t. Look at that sign. It says we shouldn’t eat and drink here.
Liu Tao: I see. Look, there’s a sign over there. It says “No parking”. What does it mean?
Mike: It means 4．.
Liu Tao: All right. 5．
| A．There is a sign on the birds’ cage. |
| B．It means “No eating and drinking”. |
| C．Let’s go. |
| D．we can’t park our bikes here. |
| E．They all mean different things. |
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
