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Linlin: Hi, Chengcheng. How are you?
Chengcheng: Hello. I’m fine, thank you.
Linlin: Are these your photos?
Chengcheng:
Linlin: When did you go there?
Chengcheng:
Linlin: Did you go there for your holiday?
Chengcheng:
Linlin: Where is Chengdu?
Chengcheng:
Linlin: Who did you go with?
Chengcheng: My parents.
Linlin: What did you do there?
Chengcheng:
Linlin: Great! You can write and tell the class about it.
| A．We went there last year. |
| B．We went to the zoo. I took many photos of animals. |
| C．Yes. We stayed there for seven days in July. |
| D．Yes, they are photos of me and my family in Chengdu. |
| E．It’s in the west of China. |
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
