A. Walk around the lake. B. Have a picnic in a park. C. Go to school.
A. At half past seven. B. At half past twelve. C. At five o’clock.
A. He is trying to get off the bus. B. He is trying to drive the bus. C. He is trying to get on the bus.
A. They want two hamburgers, a hot dog and three colas.
B. They want two hot dogs, a hamburger and three cups of milk.
C. They want two hamburgers, a sandwich and three colas.
A. It will be hot. B. It will rain. C. It’s windy.
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