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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
选择正确的单词填入对话中的空白处,使对话完整通顺。
A. How        B. How old        C. How many       D. How much        E. How about

1.—___________ students are there in your class? —Forty-five.
2.—___________ is this T-shirt? —It’s thirty yuan.
3.—___________ are you? —I’m ten years old.
4.—___________ do you like this skirt? —It’s pretty.
5.—It’s sunny in Beijing. ___________ Shanghai? —It’s rainy.
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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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