学进去-教育应平等而普惠
试题
类型:任务型阅读
难度系数:0.65
所属科目:小学英语

I’m Anna. There are six people in my family. My grandparents are old. My grandpa likes playing ping-pong(乒乓球). My grandma is thin. My parents are teachers. My father is tall. My mother is beautiful. The girl is my sister. She likes dancing(跳舞). This is me. I’m a pupil. I like drawing pictures.

1.Anna’s grandparents are teachers. (       )
2.Anna’s grandma is old. (       )
3.Anna’s father is tall. (       )
4.Anna likes dancing. (       )
5.Anna is a student. (       )
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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

用户名称
2019-09-19

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

用户名称
2019-09-19
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