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,选出你所听到的单词或短语。
(     ) 1. A. Chinese                         B. English                         C. Maths
(     ) 2. A. Monday                         B. Tuesday                         C. Thursday
(     ) 3. A. hill                                B. river                              C. boat
(     ) 4. A. morning                         B. afternoon                       C. evening
(     ) 5. A. coats                              B. shorts                            C. shirts
(     ) 6. A. hurt                                B. hurry                              C. hungry
(     ) 7. A. cough                            B. cold                                C. coffee
(     ) 8. A. go skating                       B. go boating                       C. go climbing
(     ) 9. A. take care                         B. not so good                      C. take some pills
(     ) 10. A. have a fever                  B. have a cold                       C. have a cough
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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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