(
A. She likes playing football. B. She likes playing the piano. C. She likes skating.
(
A. Yes, he does. B. No, he does. C. No, he doesn’t.
(
A. There are forty-two desks and forty chairs. B. There are forty desks and forty chairs.
C. There are forty desks and forty-two chairs.
(
A. It’s beside the door. B. It’s behind the door. C. It’s in front of the door.
(
A. He has a black dog. B. He has a black cat. C. He has a white cat.
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