学进去-教育应平等而普惠
试题
类型:句图匹配
难度系数:0.65
所属科目:小学英语
A. Amy is Jill’s e-friend. She’s from Australia. They often talk about their favourite books and films.
B. My cousin was short last year, but now he is tall and strong. Playing football is his hobby.
C. The Wus are my neighbours. They are from Shanghai. They have two children.
D. Kitty is in Grade Six. Her favourite subjects are maths and music. She also likes reading and writing.
E. There are only about 1, 800 pandas in the wild now. They need our help.

1. (       )
2. (       )
3. (       )
4. (       )
5. (       )
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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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