搜索
A: Dad, where are you going?
B: I'm going to the
A: That's
B: Sure, what time is it now?
A: It's a quarter
B: We must go quickly.
A: Look at the busy street, let's cross it now.
B: Oh
A: Look, the light is
B: Not yet.
A: Green! Green! The light is green now. Let's cross quickly.
B: Don't ran, Simon. We can walk quickly.
| 1． |
|
| 2． |
|
| 3． |
|
| 4． |
|
| 5． |
|
| 6． |
|
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
