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Amy: Hello!
Tom: Hi, Amy, this is Tom.
Amy: I'm learning English.
Tom: You're so hard-working (工作努力的).
Amy: She's singing in the room.
Tom:
Amy: They're in the sitting room.
Tom:
Amy: Yes, they are. I'm going to the bookshop tomorrow. Let's go together, OK?
Tom: Great!
| A．What's your little sister doing? |
| B．Are they watching TV? |
| C．What are you doing now? |
| D．Where are your grandpa and grandma? |
| E．It's Amy here. |
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
