搜索
Hello. I’m Fangfang. I have got two good friends. One is Xiaoyong, the other is Xiaodong. Xiaoyong is a good boy. He is very clever, but he is a bit quiet. He can make beautiful e-cards. Xiaodong is very loud. He is very naughty. He likes playing football very much, he can play it well.
1．Fangfang has got three good friends. （_____）2．Xiaoyong is clever. （_____）
3．Xiaoyong can make beautiful e-cards. （_____）
4．Xiaodong is very quiet. （_____）
5．Xiaodong is good at football. （_____）
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
