学进去-教育应平等而普惠
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类型:听音,选择正确答案
难度系数:0.65
所属科目:小学英语
听问句选答语   根据所听问句,选择正确的答语。
(     )1. A. My hobby is reading.   B. I’d like a hamburger.       C. I feel happy.                      
(     )2. A. He is tall.                  B. I clean the windows.             C. I’m hungry.
(     )3. A. I get up at 7:30 a.m.               
B. I go to school at 8:00 a.m.        
C. I go to bed at 9:00 p.m.
(     )4. A. Yes, please.               B. I want the thick one.            C. This is your pen.
(     )5. A. It’s fifty yuan.               B. Yes, you can.                    C. You’re welcome.
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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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