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Amy: What are you doing, Jim?
Bill: 1．
Amy: But it’s time to learn English.
Bill: Oh, sorry, Mom. 2．
Amy: 3． You should learn English now.
Bill: Can I play computer games after that?
Amy: 4．
Bill: Thank you, Mom. 5．
| A．I’m afraid you can’t. |
| B．I’m playing computer games. |
| C．Can I play computer games for half an hour? |
| D．I’ll learn English right now. |
| E．Of course you can. |
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
