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It is Oct. Seventh. The season is autumn. The weather is sunny but cool. The temperature is about seventeen degrees. The students have no lessons. They are in the park. The park is beautiful and large. There are many trees and flowers in it. There is a river and a hill (小山) in it. Two girls are under a big tree. They are singing and dancing. Tom and Jack are sitting beside the river. They are drawing. Kate is there, too. She is looking at the fish in the river. Look! There is an apple in Rose’s hand. She is eating it. They are happy.
1．It is a cold day today.2．The students are in the classroom.
3．Kate is looking at the fish.
4．The park is small.
5．They are having a good time.
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
