搜索
Today is Saturday. The sun isshinning（照耀）. The students ofNo.（5） Primary School（第五小学）have no classes. They are in the park. The park is big and beautiful. There are many trees and flowers in it. There is a river and ahill（山脉）in it, too. Some girls are under the big tree. They are singing and dancing. Mike and Tom are sitting on the grass. They are drawing. Look, there is a banana in Lucy’s hand. She is eating the banana. How happy they are!
（1）It’s not Saturday today.
（2）The students are having class now.
（3）There are many rivers in the park.
（4）Mike is drawing pictures now.
（5）Lucy is eating apples now.
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
