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
worried     was     with     late     glad

Jenny: Sorry, mum. I’m 1..
Mum: I was 2..
Jenny: I was at school 3. my friends.
Mum: Were you happy?
Jenny: Yes, I 4.. I played football with my friends Lily and Lucy.
Mum: Was Jim with you?
Jenny: Yes, he was.
Mum: Was he 5.?
Jenny: No, he wasn’t. He lost his beautiful watch. He was very sad.
Mum: Poor boy!
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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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