学进去-教育应平等而普惠
试题
类型:听力题
难度系数:0.65
所属科目:小学英语
听问句,选择正确的应答。
(     ) 1. A. Yes, I can.                      B. No, she can’t.                    C. She can skate.
(     ) 2. A. They like pandas.          B. I have a mango.       C. I like monkeys.
(     ) 3. A. I’m seven.                 B. Seven yuan.                            C. She is seven.
(     ) 4. A. No, they don’t.            B. Yes, we do.            C. Yes, it is.
(     ) 5. A. I have two caps.        B. I’d like three.                      C. Only one.
(     ) 6. A. Yes, please.            B. No, I don’t.                      C. I like oranges.
(     ) 7. A. It’s cool.            B. How beautiful!                         C. It’s cute.
(     ) 8. A. They’re on the bed.          B. It’s in the desk.                         C. They are clocks.
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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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