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,选出你听到的单词、字母组合或短语,将其标号填入题前括号内。
(     ) 1. A. rice                                   B. nice                                     C. face
(     ) 2. A. bag                                   B. big                                      C. pig
(     ) 3. A. egg                                   B. eye                                      C. ear
(     ) 4. A. leg                                     B. cat                                      C. red
(     ) 5. A. bird                                   B. bear                                     C. bread
(     ) 6. A. book                                 B. look                                     C. good
(     ) 7. A. 119                                   B. 12315                                   C. 114
(     ) 8. A. SOS                                 B. WC                                      C. KFC
(     ) 9. A. show me eight                    B. show me six                           C. act like a tiger
(     ) 10. A. eat some fish                    B. cut the cake                            C. drink some water
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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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