学进去-教育应平等而普惠
试题
类型:选内容补全对话
难度系数:0.65
所属科目:小学英语
past     left       right     turn left       turn right       go straight on

Boy: Excuse me, where's the zoo, please?
Policeman: Go straight on. Then 1. at Short Road. Go straight on. 2.   at Red street. It's on your 3.
Boy: Thank you!
Old woman: Excuse me, where's the supermarket. please?
Policeman: 4. at long street. You go 5. the toy shop. Then turn right at Small Road. It's on your 6..
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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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