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Alice: Hello?
Susan: Hello. 1．
Alice: Yes, it is.
Susan: 2． Would you like to go to the bookstore
with me tomorrow? I’d like to buy some books.
Alice: Sorry. I don’t need any books. 3．
I can read books on the Internet.
Susan: Yes, but you can’t always read on the computer. 4．
Alice: Oh, I see.
Susan: And in the bookstore we can find many wonderful books.
Alice: OK. I’ll go with you. 5．
Susan: What about three o’clock tomorrow afternoon?
Alice: Great. See you then.
Susan: See you.
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
