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Guide:Hello! Welcome to Qingdao. I'm your guide（导游）. Nice to meet you!
Tom: Nice to meet you too. Can you tell me something about Qingdao?
Guide: Sure. Qingdao is in the east of China.
Tom: How old is it?
Guide: It's about six thousand years old. Here we get to the Zhongshan Road.
Tom: I love the sea very much. Look! What's that?
Guide: The Zhanqiao Pier（栈桥）. It is the symbol（标志）of Qingdao.
1．Where is Tom now? （ ）
| A．In Qinghai. | B．In Qingdao. | C．In Haidao. |
| A．In the east of China. | B．In the east of America. |
| C．In the west of China. |
| A．About sixteen thousand years old. | B．About six years old. |
| C．About six thousand years old. |
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
