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（ ）（1）A.Yes, it is. B.No, it,is. C.It’s a telephone.
（ ）（2）A.Come here, please. B.All right. C.Come in, please.
（ ）（3）A.Yes, it is. B.Sure. C.No, it isn’t.
（ ）（4）A.It’s a computer. B.It’s a TV. C.It’s a book.
（ ）（5）A.OK,here it is. B.No, it isn’t. C.Yes.
（ ）（6）A.Goodbye. B.Good evening. C.Good night.
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
