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Hi! I’m Bobby. This is my friend, Cathy. We are in our school. Today we have many subjects: Chinese, English, P.E. and music.
This is my father’s office. It is big and nice. My father is studying in the office now. He is a math teacher. He likes math very much. That is our playground. Look! That is a P.E. teacher. He is having a P.E. class. The children are singing and dancing in the art room. They are having a Christmas party. There is a Christmas tree. How beautiful!
1．Today we have many subjects, Chinese, maths, and P.E.2．My father’s office is big and nice.
3．My father is a math teacher.
4．We are having P.E. class.
5．The children are playing football.
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
