搜索
Lin Xuan lives in Shenzhen with his parents. He’s a primary school student. He usually goes to school by bus on sunny days. On rainy days, he goes to school by car. Xu Feng is Lin Xuan’s cousin. He lives in Shanghai. He’s also a primary school student. He always goes to school by subway.
Today is Saturday. Lin Xuan has no classes. He wants to send a letter to Xu Feng. He will go to the post office by subway this afternoon.
1．Lin Xuan always goes to school by bus.2．Xu Feng is Lin Xuan’s cousin.
3．Xu Feng lives in Shenzhen.
4．Lin Xuan wants to send a letter to Xu Feng.
5．Lin Xuan will go to the post office by subway this afternoon.
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
