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:0.85
所属科目:小学英语
Tom: Hello! Lucy.
Lucy: Hi! Tom. You're early. How do you come to school?
Tom: 1.
Lucy: Me too. Look! Who's that woman?
Tom: 2.
Lucy: She is a head teacher. 3.
Tom: 4.
Lucy: She often goes to work by car.
Tom: What are her hobbies?
Lucy: 5.
Tom: Cool! It's time for class. Let's go.
A.She likes singing and dancing.
B.She is my mother.
C.What does she do?
D.Usually, I come on foot.
E.How does she go to work?
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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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