学进去-教育应平等而普惠
试题
类型:判断题
难度系数:0.64
所属科目:小学英语
听音,判断句子与所听内容是否相符。
(1)A.She took twenty crayons.
B.I bought twenty crayons.
(2)A.We need six bananas.
B.They need some bananas.
(3)A.Do you live in London?
B.Did you live in London?
(4)A.Mike went to the Great Wall last Friday.
B.Mary went to the Great Wall last Saturday.
(5)A.The T-shirt is Amy’s.
B.The T-shirt is Sam’s
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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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