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Today is Sunday. It’s a nice day. We have no classes. We are in a nature park. The park is beautiful. There are many trees and flowers in it. Look! Some girls are under the big tree. They are singing and dancing. Mike and Tom are sitting on the grass. They are drawing pictures. Lucy is eating a banana. John is watching the clouds. We are very happy.
1．It’s Saturday today. We have no classes.2．We are in a beautiful nature park.
3．Some girls are singing and dancing under the tree.
4．Mike is eating a banana now.
5．John is watching the clouds 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
