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A: Look at the picture.
B: Who is the boy?
A:
B:
A: I know they speak English.
B:
A: It’s Canada.
B: That’s right. Is Washington, D.C. the capital city of the U.S.?
A:
B: What colour is the flag of the U.S.?
A:
| A．Yes, it is. |
| B．He is my cousin. |
| C．It’s red, white and blue. |
| D．My cousin has brown hair. |
| E．What country is next to the U.S.? |
| F．Where does your cousin work? |
| G．What do you know about the U.S.? |
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
