学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.64
所属科目:小学英语
根据发音规则选词填空(3分)
good   hat  library  hot  family   bike
(1)Helen would like a hamburger and a _________ dog.
(2)Fanny is flying a kite with her ________.
(3)Bill bought a toy ________ for his brother.
(4)I can see eleven lights in the ________.
(5)My ________ little dog, go and get my bag on that log.
(6)A fat cat is wearing a black ________. 
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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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