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Amy: 1．
Lingling: I feel very tired.
Amy: 2．
Lingling: I helped my mum.
Amy: You’re a good girl! 3．
Lingling: No, I didn’t. My grandma was ill and we took her to the hospital.
Amy: 4． Is your grandma better now?
Lingling: Yes. She took some medicine (药) and drank more water.
Amy: 5． Well, now you can have a good rest.
Lingling: Thank you!
| A．Did you wash clothes for your mum? |
| B．I’m happy to hear that. |
| C．What’s the matter, Lingling? |
| D．What did you do last night? |
| E．Oh, I’m so sorry! |
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
