学进去-教育应平等而普惠
试题
类型:完形填空
难度系数:0.65
所属科目:小学英语
完形填空。

John is ______ American boy. He is in China now. We are at the ________ school. He is my desk mate. He ______ very hard. He often helps _______ with my English and I ________ him with his Chinese. We help each other. We are good ________.

1.
A.aB.anC.the
2.
A.bigB.sameC.near
3.
A.speakB.studiesC.work
4.
A.meB.IC.my
5.
A.helpB.am helpingC.helps
6.
A.boysB.girlsC.friends
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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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