搜索
I hope you like this photo. On it you can see a nature park, it's a famous place in this town. Lots of people come here on weekends, they go for a walk, play games, take photos of the beautiful flowers and green plants. There is a big lake in the park, some people row boats on the lake, sometimes I can see some ducks swimming there. There is a white bridge over the lake, it's one hundred metres long and fifty years old. I like standing on the bridge and looking at the ducks.
Yours,
Tim
1．This photo is about a nature park.2．The nature park has got beautiful flowers and green plants.
3．There's a white big house in the park.
4．The bridge is one hundred metres long and fifteen years old.
5．This is a letter for Tim's mother.
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
