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,为问题选择合适的答语。
(     ) 1. A. Some ice creams.   B. Some juice.          C. Some cheese.
(     ) 2. A. Sixty yuan.            B. Sixty-five yuan.     C. Six yuan.
(     ) 3. A. No, she can't.        B. Yes, she can.        C. Yes, she does.
(     ) 4. A. He can't eat.          B. He can't see.        C. He can't walk.
(     ) 5. A. She feels angry.     B. She feels tired.       C. She feels bored.
(     ) 6. A. Very well.             B. Not very well.       C. He can’t play it.
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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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