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B: I like going sightseeing.
A: 2．
B: About once a year.
A: 3．
B: I usually go in summer vacation.
A: 4．
B: I plan to go to Sichuan.
A: 5．
B: I’m going to take a plane.
| A．How often do you go sightseeing? |
| B．How are you going there? |
| C．When do you usually go sightseeing? |
| D．What's your favorite activity? |
| E．Where are you going next vacation? |
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
