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Tom: Hi, Lili! Where did you go last Saturday?
Lili:
Tom: Oh, really? Did you go to the Underwater World(海底世界)?
Lili:
Tom:
Lili: Of course I did.
Tom: You’re so lucky.
Lili: Look! There are photos.
Tom:
Lili:
| A．Yes, I did. It was very great. |
| B．Wow! So cool. |
| C．It was windy but warm. |
| D．I went to Changsha(长沙). |
| E．And did you go to the Yuelu Academy(岳麓书院)? |
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
