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（ ）May I have a copybook?
（ ）Get up, David．
（ ）All right .
（ ）Come in, please.
（ ）What's in your school bag?
（ ）This card is for Mr.Green.
（ ）That ruler is for your sister.
（ ）Happy Teachers' Day!
（ ）Here's a card for you.
（ ）Come here, David．
（ ）I've got a car, Mr.Green.
（ ）Here you are.
（ ）What's that in your school bag?
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
