学进去-教育应平等而普惠
试题
类型:字母题
难度系数:0.64
所属科目:小学英语
脑筋急转弯。  
1. Last week, it took me three days to go from A to B, but then four days to go from B to
A.What are A and B?
2. What letter is a body of water?
3. What has teeth but cannot eat?
4. What two words contain thousands of letters?
5. Which runs faster,heat or cold?Why?
6. What starts with E, ends with E and only has one letter?
7. What of us goes up and never comes down?
8. Why is the letter E so important?
9. Why are the letter G and letter S in "gloves" close to each other?
10. What letter is an animal ?
11. What letter is a question?
12. Why is U the jolliest letter?
13. What does everybody do at the same time?
14. How can you make a rope shorter without cutting or winding it?
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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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