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
补全对话,其中有两项是多余的。
A: Look at the picture.
B: Who is the boy?
A: 1. And he lives in the U.S.
B: 2.
A: I know they speak English.
B: 3.
A: It’s Canada.
B: That’s right. Is Washington, D.C. the capital city of the U.S.?
A: 4.
B: What colour is the flag of the U.S.?
A: 5.
A.Yes, it is.
B.He is my cousin.
C.It’s red, white and blue.
D.My cousin has brown hair.
E.What country is next to the U.S.?
F.Where does your cousin work?
G.What do you know about the U.S.?
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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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