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学进去-教育应平等而普惠
试题
类型:听音,选择正确答案
难度系数:0.85
所属科目:小学英语
听音选择,使下列话语完整。
(      ) 1. Welcome, everyone! Do __________.
A. coming                                 B. come in                          C. comeing
(      ) 2. Where is the ________?
A. teacher’s office                B. teachers’ office               C. Teachers’ office
(      ) 3. It’s very kind ________ you.
A. of                                    B. off                                     C. for
(      ) 4. The green dress is ________ than the blue one.
A. pretty                                        B. prettyer                            C. prettier
(      ) 5. — ________ that?        
— It’s Little Red Riding Hood.
A. Whose                                B. Who’s                              C. What’s
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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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