B: Hi, grandpa! It’s so cool. We’re having a party now.
A: What for?
B:
A: Mid-Autumn Day?
B: Yes.
A: Do you like it?
B: Yes, but I like Easter best.
A: I like it, too. Miss you, John.
B: Thanks, grandpa! See you!
A: See you!
A.Have a nice day! |
B.It’s usually in September or October. |
C.I can look for Easter eggs. |
D.It’s Easter Day. |
E.This is grandpa. |
F.It’s Mid-Autumn Day! |
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