学进去-教育应平等而普惠
试题
类型:听音,选择听到的内容
难度系数:0.85
所属科目:小学英语
听录音,选出句中你听到的单词或短语。
(     ) 1. A. sweet                                B. eat                                        C. cake
(     ) 2. A. bird                                 B. book                                      C. look
(     ) 3. A. uncle                                B. aunt                                      C. under
(     ) 4. A. man                                 B. name                                     C. farm
(     ) 5. A. apple                                B. pig                                        C. pear
(     ) 6. A. we                                   B. you                                        C. they
(     ) 7. A. cousin                              B. class                                      C. clock
(     ) 8. A. where                              B. who                                        C. what
(     ) 9. A. three                                 B. twelve                                 C. tree
(     ) 10. A. my pictures                       B. lunch box                            C. over there
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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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