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| A． It's October seventh. The season is fall. The weather is sunny, but cool. The temperature is about 17 degrees. The pupils （小学生）of No.12 School 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 in it, too. Some 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's a cold day, today. （2）The pupils 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
