学进去-教育应平等而普惠
试题
类型:连词成句
难度系数:0.65
所属科目:小学英语
连词成名。
1.Alice; years; and; her; lived; grandparents; some; for; together (.)
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2.other; know; do; any; stories; you; animal (?)
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3.Elsa; grew; learnt; and; up; a; lot (.)
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4.are; only; thousand; blue; in; about; whales; the; wild; ten; there (.)
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5.do; to; we; in; what; help; can; animals; danger (?)
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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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