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Dale: Hi! My name is Dale.
Helen: Nice to meet you, too. I’m Helen.
Dale: Spell it, please.
Helen:
Dale: What’s your QQ number?
Helen:
Dale: My QQ number is 65826213.
Helen: It’s a photo of my family.
Dale:
Helen: He is my cousin.
| A．Who is the boy? |
| B．What’s that? |
| C．Is that your family photo? |
| D．Who is she? |
| E．Nice to meet you. |
| F．It’s 35801246. |
| G．H-E-L-E-N. |
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
