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
听录音,选出正确的答语。听两遍。
(      ) 1. A. No, he doesn’t.                   B. Yes, he is.                             C. Yes, he can.
(      ) 2. A. He is a writer.                         B. He is 35.                            C. He likes playing football.
(      ) 3. A. By subway.                         B. This weekend.                     C. The scientist.
(      ) 4. A. Take the No. 8 bus.                
B. They are near the library.        
C. It’s next to the supermarket.
(      ) 5. A. She wants to be a singer.     B. She is a singer.                     C. She likes singing.
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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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