搜索
1．This is Yang Ling. He’s my friend. （
A B C
2．HappynewYear! （
A B C
3．Lookmycap. （
A B C
4．Whataboutan cake? （
A B C
5．Thisaremy father. （
A B C
6．Hi, ILiu Tao. （
A B C
7．What’s colour isyour skirt? （
A B C
8．IsyouSam? （
A B C
9．This is toyou. （
A B C
10．Lookatmy. （
A B C
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
