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:0.65
所属科目:小学英语
听选答语。听问句,从每小题所给的A、B、C三个选项中选择正确的答语,每小题读两遍。
( ) 1. A. Yes, I can.          B. Yes, I do.       C. No, I can’t swim.
( ) 2. A. No, I don’t.     B. Not good.       C. Yes, of course.
( ) 3. A. No, it doesn’t.       B. Yes, it can.          C. He likes.
( ) 4. A. It is me.            B. My grandpa took it.   C. Two years ago.
( ) 5. A. No, I can do.   B. I can speak English.   C. Chinese.
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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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