学进去-教育应平等而普惠
试题
类型:填空题
难度系数:0.64
所属科目:小学英语
根据答句写问句。(共5小题,每小题2分)
(1)A:                      
B:I often watch TV on the weekend.
(2)A:                      
B:No, I am answering the phone .
(3)A:                      
B:They are fighting .
(4)A:                      
B:It’s cold and windy today.
(5)A:                      
B:It’s January 1st.
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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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