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:0.40
所属科目:小学英语
从方框中选择恰当的选项,补全对话。(有一项多余)
Li Lin:Hi, Mom! This is my friend, Anna.
Mom:(1)________
Anna:Nice to meet you, too.
Mom:(2)_________
Anna:I'm from Canada.
Mom:(3)_________
Anna:Sorry, I don't like oranges.
(4)_________
Mom:Sure. Here you are.
Anna:Thank you.
Mom:(5)_________
Anna:I have one brother and one sister.
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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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