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A: How are you, Tina? You look so happy.
B: Yes, I’m very excited.
A: That sounds great, Have a good time!
B: Thank you! What’s wrong, Lily?
A: I can’t find my new watch.
B:
A: Thank you!
B: You’re welcome. Let’s go home together.
| A．Don’t worry. |
| B．It’s under your book. |
| C．You look sad today. |
| D．I am going to visit the West Lake. |
| E．My mother will be angry with me. |
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
