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Mike and John are good friends. Mike's classroom is on the first floor. John's classroom is on the second floor. It is cool and sunny today. It's 9：00. Mike is in the computer room. John is in the art room. It's 12：00. It's time for lunch. They have lunch in the canteen(食堂). The canteen is very big. Now it's five o'clock. It's time to go home, but they are playing football on the playground. They are happy.
1．John's classroom is on the first floor.2．Mike's classroom is on the second floor.
3．It's cool and sunny today.
4．It's 9 o'clock. They are in the computer room.
5．They have lunch at school, and the canteen is very big.
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
