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:0.65
所属科目:小学英语
听录音,选出你所听到的单词,听两遍。
(      ) 1. A. hurt                  B. hear                      C. her               
(      ) 2. A. talk                  B. tale                       C. take                 
(      ) 3. A. China               B. chat                       C. chair
(      ) 4. A. giraffe               B. rabbit                    C. traffic             
(      ) 5. A. four                  B. five                       C. full                 
(      ) 6. A. doctor                   B. dentist                           C. bedtime        
(      ) 7. A. because             B. prince                      C. clothes
(      ) 8. A. out                    B. our                         C. over
(      ) 9. A. Let me help you. B. Come and help me.     C. Help me, please.
(      ) 10. A. on the right        B. on your right            C. all right
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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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