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
选择正确的单词填空。
(1)A:Whose socks   (is are)these? B:They    (is are)my socks.
(2)A:   (Is are)it Li Shan’s skirt? B:No,it    (is are)Liu Mei’s.
(3)A:Who   (is are am)he? B:He    (is are am)my teacher.
(4)A:What   (am is are)this? B:It   (am is are)a sweater.
(5)A:   (Is Am Are)you Alice?
A.:Yes,I   (Is Am Are).
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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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