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:0.65
所属科目:小学英语
Listen and choose. 听录音,选择最合适的应答句,将其字母编号填在括号内。每小题读两遍。
_____) 1. A. It’s five ten.                     B. I’m five.
_____) 2. A. Just a minute, Mum.             B. It’s time to get up.
_____) 3. A. You’re in Beijing.                B. I’m in Beijing.
_____) 4. A. It’s time for lunch.               B. It’s time to go to school.
_____) 5. A. Oh, it’s time for English.          B. Oh, it’s time for maths.
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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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