学进去-教育应平等而普惠
试题
类型:连线题
难度系数:0.65
所属科目:小学英语
1. When is your birthday?                         a. Yes, we were.
2. What subjects does she have?                 b. She’s reading a book.
3. What’s your school like?                       c. She made a wish.
4. Were you excited?                                d. He goes to the museum.
5. What’s she doing?                                e. No, he wasn’t.
6. What does he do after school?                 f. It’s big and beautiful.
7. Was he excited?                                   g. It’s in September.
8. What did Jenny do yesterday?                 h. She has Chinese and maths.
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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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