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Chen Jie: Let me help you.
Wu Yifan:
Chen Jie: Oh, your schoolbag is heavy.
Wu Yifan: An English book, a notebook, a maths book and ten storybooks.
Chen Jie: Ten?
Wu Yifan: Yes, they’re my friend’s storybooks.
Chen Jie: Who’s your friend?
Wu Yifan: Can you guess?
Chen Jie: Is she Amy?
Wu Yifan:
Chen Jie: I know. It’s Lingling.
Wu Yifan:
| A．She’s tall and thin. She likes to sing. |
| B．Thank you. |
| C．Yes, you’re right. |
| D．No. She has red glasses and a blue cap. |
| E．What’s in it? |
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
