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
选出你所听到的句子。
(     ) 1. A. Is their school big?   B. Is it small?   C. Is your school big?
(     ) 2. A. I often read in the library.   B. We have lunch in the canteen. C. We play sports on the playground.
(     ) 3. A. She is from America.   B. She is from Japan. C. He is from Britain.
(     ) 4.A.He is our school head teacher.   B. He is our Art teacher.   C. She is our class teacher.
(     ) 5.A.She has got black hair.   B. She has got brown hair. C. He has got brown hair.
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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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