Teacher: What's your favourite animal, Amy?
Amy: It's the dog.
Teacher: And what's your favourite sport?
Amy: It's swimming.
Teacher: Sam, what's your favourite animal?
Sam: The elephant. And my favourite sport is football.
Teacher: Lingling, what's your favourite animal?
Lingling: It's the giraffe.
Teacher: Aah! What's your favourite sport?
Lingling: Ping-pong.
A. B. C.
D. E. F.
1.Amy
2.Sam
3.Lingling
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