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(M=Mingming, L=Lulu)
M: Hello! This is 6210866.
L: Hello!
M: It’s Mingming here.
L: Yes. Hi. Mingming
M: Yes.
L:
M: Great! Where shall we meet?
L:
M: OK. Goodbye.
L:
| A．Bye. |
| B．Are you free now? |
| C．Shall we meet at my house at nine? |
| D．Who’s that? |
| E．Let’s go swimming, OK? |
| F．Is that Lulu? |
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
