学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.85
所属科目:小学英语
读对话,选出相应的图画。10%
(1)—Good morning! I’m Miss Wang .
—Good morning , Miss Wang !
(2)—Hello ! What’s your name ?
—Hello ! My name is Polly .
(3)—Excuse me . Are you Jim Green ?
—No, I’m not . I ’m Li  Ming .
—Sorry.
—That’s all right.
(4)—This is Wei Gang.
This is Ann Read
—How do you do ?
—How do you do ?
(1)                 (2)                (3)               (4)           
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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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