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:0.65
所属科目:小学英语
听录音,选择你所听到的句子。(听两遍)
(      ) 1. A. But it's small.          B. It's too small for you.          C. Have you got a small one?
(      ) 2. A. Let's make a birthday card for him too.   B. Let's take this one.   C. Let's take it.
(      ) 3. A. It's light for him.          B. It's easy for his father.          C. It's hard for him.
(      ) 4. A. It's a small bag.   B. This bag is big, but it looks old.     C. This bag is big and nice.
(      ) 5. A. Is the new bag light?          B. That blue bag is heavy.          C. Is it a small pocket?
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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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