学进去-教育应平等而普惠
试题
类型:匹配题
难度系数:0.64
所属科目:小学英语
选择答语,连一连。
(    )1. May I have a look?                           A  I’d like some beef.
(    )2. What’s that?                                B  OK. Let me clean the windows.
(    )3. Let’s clean the classroom.                     C  It’s on the desk.
(    )4. What colour is your new bag?                  D  Sure, here you are.
(    )5. How many people are there in your family?       E  She is a teacher.
(    )6. What’s your mother?                          F  It’s a small bee.
(    )7. Where’s my book?                            G  Three.
(    )8. What would you like for dinner?                 H  No, they aren’t.
(    )9. Are they near the table?                        I  Five pencils and six crayons.
(    )10. What’s in your pencil-case?                   J  It’s purple and white.
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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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