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（1）A. How many Cokes?
B. Count the Cokes.
C. Seven Cokes, Ben.
（2）A. They’re plants.
B. It has many roots.
C. Look at the leaves.
（3）A. Is this the library?
B. Is that the office?
C. Is this the classroom?
（4）A. What shape is this?
B. What shape is that?
C. What shape is it?
（5）A. Kitty is happy and tall.
B. Ben is sad and tired.
C. Alice is hungry and thirsty.
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
