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Emma: I got a B on the Chinese test.
Sam: It's not very bad.
Emma: I can't get an A although I tried my best. What should I do?
Sam:
Emma:
Sam: You should read more books and keep a diary.
Emma:
Sam: You are welcome. Now the most important thing is to be happy
Emma: OK. Let's go.
| A．I think you should listen carefully in class. |
| B．Thanks for your advice. |
| C．You look sad. Why? |
| D．What should I do after class? |
| E．Would you like to go outside and play games 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
