学进去-教育应平等而普惠
试题
类型:填内容补全对话
难度系数:0.85
所属科目:小学英语
补全对话。
A: This zoo is very big.
B: Yes. It’s very 1. (美丽的) too.
A: There 2. a panda on the grass and there 3. some ducks in the river.
B: Look! The bear is so 4. (强壮的).
A: Are there 5. boats on the river?
B: No, there aren’t.
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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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