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A: Hello, Lin Shan!
B: Hi, Wang Ling!
A:
B: Yes, I did. I watched the Beijing Winter Olympics on TV last night.
A: Me, too. It’s really interesting. Did you see the skier Gu Ailing on TV?
B: Sure. She looks like a foreign girl, but she competes for our China.
A: Because her mother is a Chinese, and she loves China, though she has an American father.
B: Wow! What a lovely girl!
A: She won two gold medals in the Beijing Winter Olympic Games.
B: When was she born?
A:
B: Only 19 years old? She is still a student, isn’t she?
A:
B: Wow! She must be hard-working.
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
