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,选出你所听到的句子。(听两遍)
(     ) 1. A. Why can't you see it?       B. Why can't I see it?       C. Why can I see it?
(     ) 2. A. I put it on your bed.       B. I put it on my bed.       C. I put them on my bed.
(     ) 3. A. There were baseball caps.       B. There was a baseball cap.       C. There were beautiful cups.
(     ) 4. A. Sam opened his bag.       B. Mum opened her bag.       C. Mum opened her box.
(     ) 5. A. Mum planned to go fishing on Saturday.          B. Mum planned to go shopping on Sunday.     C. Mum planned to go shopping on Saturday.
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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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