学进去-教育应平等而普惠
试题
类型:听音,选择听到的内容
难度系数:0.65
所属科目:小学英语
听录音,选择你所听到的句子。(听两遍)
(     ) 1. A. It wore a hat.                  B. That's a great idea!          C. I saw a man.
(     ) 2. A. I went to Chengdu.          B. This is Sanya.                 C. I went to the moon.
(     ) 3. A. I'll be home at seven o'clock.     B. It's in the west of China.       C. It's nine o'clock in the morning now.
(     ) 4. A. The dog wore a coat.     B. She visited the Tianchi Lake.       C. She climbed the Tianshan Mountains.
(     ) 5. A. My mother goes to work at 5:30 every morning.       B. I do it at seven o'clock every morning.       C. What time does your mum get up?
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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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