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:0.65
所属科目:小学英语
Jenny: Do you know about the Canada?
Danny: 1.
Jenny: 2.
Danny: The U.S.
Jenny: 3.
Danny: It’s Ottawa.
Jenny: Look at the flag of Canada. What can you see?
Danny: The flag of Canada is red and white. 4.
Jenny: What is the famous waterfall in Canada?
Danny: 5.
A.It’s Niagara Falls.
B.Yes, I know.
C.I can see a red leaf on it.
D.What country is next to Canada?
E.What’s the capital city of Canada?
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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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