Santa is ready to go! Christmas is coming! Christmas is coming!
He flies in the sky! He comes at night!
He sees Christmas trees and lights!
In children's houses, he gives the gifts to little girls and boys.
He brings toys and special gifts.
He goes to the West.
He goes to the East.
“Ho! Ho! Ho!” The happy little old man!
1.Santa flies in the sky. (2.Santa comes in the morning. (
3.Santa can see Christmas trees and lights. (
4.Santa brings gifts for little boys and girls. (
5.Santa is an old man. (
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