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Ten years ago, my school was small and old. It had only one building and there were no libraries or gyms in it. Students had PE lessons in an old playground. And there weren’t many trees or flowers in the school. But there are great changes now. There is a new building near the old one. The classrooms in it are bigger and brighter. My school has a new library,too. Students can read different kinds of books there. There are lots of trees and flowers near the new gym. The school looks more beautiful.
1．There was one building and one library in my school ten years ago.2．My school didn’t have many trees or flowers ten years ago.
3．There are two buildings in my school now.
4．The classrooms are smaller and cleaner 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
