(
B.No, I don’t.
C.Yes, I am.
(
B.No, I don’t.
C.No way.
(
B.It is April 19th.
C.It is sunny.
(
B.On the desk.
C.27 yuan.
(
B.The fireman fights fires.
C.A fireman fights a fires.
(
B.I don’t mind.
C.I want to help people.
(
B.Once a week.
C.Very often.
(
B.Because he saves the woman.
C.Because he fought the robbers.
(
B.Mary does.
C.Mary did.
(
B.On planes.
C.On buses.

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

