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Ms Li: Good morning, boys and girls. How are you?
Boys and girls: Good morning, Ms Li. Fine, thank you.
Ms Li: Please stand up, Wenwen. Point to the blackboard, please. OK. Next.
Wenwen: Stand up, Xiaoqiang. Point to the door.
Wenwen: OK. Sit down, Xiaoqiang.
Ms Li: You are very good.
根据对话内容，完成下列各题。
1.Stand
2.Point to the
3.Point to the
4.Sit
5 .You are very
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
