搜索
I went to Chengdu three years ago. It is in Sichuan province. It is the capital of Sichuan. It is in the west of the country. The famous Chinese pandas live in Sichuan. I took some pictures for them. I climbed mountains with my parents. We had an interesting life.
1．I went to Chengdu two years ago.2．Chengdu is in Sichuan province.
3．Chengdu is in the east of China.
4．I climbed mountains with my parents in Chengdu.
5．My friends took some pictures there.
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
