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A. Will you come?
B. Thank you!
C. At 6:00 p. m.
D. Because today is my mother's birthday.
E. What will you do for your mother on her birthday?
Zhang Xianfei: Hello, Zhang Rongqian. You look so happy today. Why?
Zhang Rongqian: 1.
Zhang Xianfei: Happy birthday to her!
Zhang Rongqian: 2.
Zhang Xianfei: 3.
Zhang Rongqian: We will have a birthday party for her. 4.
Zhang Xianfei: Sure. When is it?
Zhang Rongqian: 5.
Zhang Xianfei: OK. See you then.
Zhang Rongqian: Bye.
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
