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
(Lily is Alice’s good friend. Now Lily is in Alice’s room.)
Lily: Hey, Alice. Who’s the young man?
Alice: 1.
Lily: He looks so tall.
Alice: He’s 180 cm. 2.
Lily: 3.
Alice: He’s 75 kg.
Lily: 4.
Alice: Yes, he is 10 kg heavier than my father.
Lily: 5.
Alice: He’s a policeman.
Lily: You have a good brother.
A.He’s taller than me.
B.How heavy is he?
C.How tall is he?
D.What does he do?
E.He’s my brother.
F.What’s his hobby?
G.Is he heavier than your father, too?
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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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