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:0.85
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. Tomorrow is my cat's birthday.     B. What did Lingling do?     C. I think he's got a toy panda.
(     ) 2. A. It's 8:30 now.             B. It's in the south of China.          C. School starts at eight o'clock.
(     ) 3. A. I'll take you to school.   B. She visited the Tianchi Lake.       C. I'll be late.
(     ) 4. A. He lives there with his three children.       B. He went to Qingdao and visited his friend.       C. I'll make a paper fish for her.
(     ) 5. A. I used my computer.                 B. That's late.             C. I'm late and I'm tired.
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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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