学进去-教育应平等而普惠
试题
类型:填空题
难度系数:0.65
所属科目:小学英语
选择合适的疑问词完成句子,疑问词可以重复使用。
Where  What  How  How many
1.— _______ is this?  — It’s a pencil.
2.— _______ is the apple?  — It’s on the chair.
3.— _______ old are you?  — I’m ten.
4.— _______ girls?  — Eleven girls.
5.— _______ is the time, please?  — It’s half past four.
6.— _______ is Daming?  — He’s in his bedroom.
7.— _______ do you go to school?  — I walk to school.
8.— _______ do you do in summer?  — I go swimming.
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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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