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My hometown is Qiqihar. It is a beautiful and clean city. There is a famous park in the city. It is called Longsha Park. It is very big. Many people often take a walk in the park. Look! Some boys are playing football. Some girls are playing with their toys. Some old people are dancing together. Some people are doing Tai Chi with their friends. You mustn’t take your dogs to the park. And you should keep off the grass.
1．Qiqihar is a clean city.2．There are two parks in the city.
3．You can take your pets to Longsha Park.
4．Some boys are doing Tai Chi.
5．The girls are playing with their toys in the park.
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
