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
用适当的词填空:10%
(1)I often help Mary       her Chinese .
(2)The vet takes care of all kinds       animals .
(3)There       a lot of orange in the bottle .
(4)     girls and boys in the USA enjoy playing the game .
(5)I have some news       you .
(6)There       any storybooks in my bag .
(7)Are there       desks and chairs there ? Yes , there are a lot of .
(8)There       some white sheep under the tree .
(9)I have two new friends . One is from Britain .              is from Japan .
(10)Now , let’s do it       group .
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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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