学进去-教育应平等而普惠
试题
类型:选内容补全对话
难度系数:0.64
所属科目:小学英语
情景交际:选择正确的句子补全对话。
A: Look at this photo.        B: ___________1__________
A: He is my friend.            B:___________2__________.
A: His name is Li Tao.         B: A Chinese boy?
A: ___________3______­____       B: __________4____________
A: They are black.               B: He is tall and strong.
A: __________5____________        B: Yes, I do.
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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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