Linda: OK. Let's go. Look, what's that?
Xiao Hui: A letter! Whose letter is it?
Linda: Let's have a look. The name is Bob.
Xiao Hui: It's Bob's letter. We should give it to him.
Linda: OK.
Xiao Hui: Bob, here's your letter.
Bob: Yes, it's mine. Thanks a lot.
Xiao Hui: You're welcome.
1.Linda has a letter.
2.The letter is Xiao Hui's.
3.The letter is green.
4.Bob finds his letter.
5.Xiao Hui and Linda are good friends.
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同类型试题
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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
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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
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