学进去-教育应平等而普惠
试题
类型:听音,选择正确答案
难度系数:0.85
所属科目:小学英语
根据你所听到的内容,选择合适的应答句。(听两遍)
_____ 1. A. Because he is reading funny stories.
B. Because his new bike is lost.
C. Because she is reading sad stories.
_____ 2. A. We can put rubbish in the bin.  B. We can use plastic bottles.  C. We can use a lot of energy.
_____ 3. A. Yes, he had a lot of fun.  B. No, he doesn't.  C. He went there by plane.
_____ 4. A. It means “No smoking”.
B. They mean you shouldn't drink here.
C. It means you can't eat in the library.
_____ 5. A. He is reading a storybook.   B. He washes his car. C. He read emails.
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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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