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:0.85
所属科目:小学英语
听短文,选择。
(     ) 1. Linda is ______ and her brother is ______.
A. 14; 4     B. 14; 5     C. 14; 13
(     ) 2. Today is ______ birthday.
A. Linda’s     B. Linda’s brother’s     C. I don’t know.
(     ) 3. Linda is going to ______ ______ this Friday afternoon.
A. have classes; by bike     B. buy some cakes; on foot     C. buy some comic books; by bike
(     ) 4. Where is Xinhua Bookstore?
A. Next to No. 2 Primary School.     B. Next to Linda’s home.     C. Next to No. 12 Hospital.
(     ) 5. Today Linda’s family will be ______.
A. worried     B. happy     C. busy
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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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