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B: Hello, Wang Bing. This is Li Tao. What are you doing now?
A:
B:
A: He's Tommy.
B: Where is he from?
A: He's from Australia.
B: Where does he live?
A:
B: What does he usually do at weekends?
A:
B: Can you come and help me with my Maths?
A: Sure.
| A．He lives in Sydney. |
| B．This is Wang Bing speaking. |
| C．Who's your e-friend? |
| D．I'm writing an email to my e-friend. |
| E．See you this aftermoon. |
| F．He usually goes fishing with his father. |
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
