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It is Saturday today. The sun is shining in the sky. The students of Rainbow School have no lessons today. The students are in the park. The park is big and beautiful. They can see green trees and colourful flowers in the park. There is a small lake (湖) in it too. Some boys are playing football on the grass. Some girls are drawing under the big tree. Tom is beside the lake. He is watching the fish swimming in the lake. Alice and Sally are sitting on the chair. They read a book together. The children are all happy.
1．Where are the students of Rainbow School?2．What’s in the lake?
3．What are some boys doing?
4．Who is reading on the chair?
5．How do the students feel?
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
