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Daming: Look at this postcard. It’s a picture of the Great Wall.
Simon: 1. _________
Daming: It’s more than twenty thousand kilometers long.
Simon: Wow!
Daming: Tell me something about New York. 2. _________
Simon: It’s very big. It’s got more than eight million people.
Daming:That is big.
Simon: 3. _________
Daming: It’s got about twenty million people.
Simon: 4. _________
Daming: Yes, I have. 5. _________
Simon: Yes, I do. They are very great!
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
