学进去-教育应平等而普惠
试题
类型:句型转换
难度系数:0.64
所属科目:小学英语
句型转换,每空一词。
(1) His ruler is in the box. (对划线部分提问)
________________ ________________ his ruler?
(2) She is Lucy and she is Lily. (改为选择疑问句)
________________ she Lucy ________________ Lily?
(3) Is he your friend? (改为复数)
________________ ________________ your ________________?
(4) These are our apples. (改为单数)
________________ is ________________ ________________.
(5) The boy is all right today (对划线部分提问)
________________ ________________ the boy today?
(6) They can see a bird in the tree. (对划线部分提问)
________________ ________________ ________________ see in the tree?
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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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