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,选出你所听到的内容。
(      ) 1. A. lunch                                                            B. dinner                                                     C. breakfast
(      ) 2. A. they                                          B. these                                C. those
(      ) 3. A. cheap                                 B. sheep                                C. Zip
(      ) 4. A. hot                                     B. cat                                       C. hat
(      ) 5. A. sweater                                    B. dress                                C. pants
(      ) 6. A. tomato                              B. potato                         C. table
(      ) 7. A. cool                                         B. coat                            C. cow
(      ) 8. A. 9 o’clock                                            B. 7 o’clock                               C. 8 o’clock
(      ) 9. A. cold and snowy                        B. cool and windy                         C. cool and rainy
(      ) 10. A. put on your shorts                         B. take off your socks             C. wash your shirt
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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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