学进去-教育应平等而普惠
试题
类型:任务型阅读
难度系数:0.40
所属科目:小学英语
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Jane White is an American gir. She is a student. She is fifteen. Her father is Mr. White. Her mother is Mrs. White. Bob is her brother. He is a student, too. He is in a black jacket. Jane is in a red jacket. She is a nice girl.

1.Jane White is English. (       )
2.She is a student. (       )
3.Mr. White is her mother.   (       )
4.Jane is fourteen.   (       )
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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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