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Hello, Kate. Today is the School Open Day. Welcome to our school. This is our teachers’ office. My music teacher is listening to the music. This is the library. We can read books in it. The students are studying in the classroom.
We also have a playground. It is big and nice. We often have P.E. classes on it. Look! The boys are playing football on the playground.
1．Today is the School Open Day.2．We can read books in the library.
3．The students are dancing in the classroom.
4．We often have P.E. classes in the art room.
5．The playground is big and nice.
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
