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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

Last week Bill went shopping with his aunt Mary. They went to the bank(银行) first and then they went to the supermarket. Aunt Mary bought some fruits. Bill wanted some coke and nuts, but there weren’t any. Aunt Mary bought some ice creams. She had one, but Bill had two ice creams. Bill was very happy.

1.Bill went shopping with his mother last week. (     )
2.They went to the bank first. (     )
3.Bill wanted some fruits. (     )
4.Aunt Mary didn’t have any ice creams. (     )
5.Bill was very happy. (     )
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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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