学进去-教育应平等而普惠
试题
类型:填空题
难度系数:0.85
所属科目:小学英语
句型转换
(1) It’s time to have lunch.(改为同义句)
It’s time________ ________.
(2) He has eight lamps.(对画线部分提问)
________ ________lamps________he have?
(3) They have an English lesson every day.(用now改写)
They________ ________anEnglish lesson now.
(4) He saw some public signs in the park.(改为否定句)
He________ ________ ________public signs in the park.
(5) I’d like a bike as my birthday present.(对画线部分提问)
________ ________ ________like as________birthday present?
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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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