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,选出与所听内容相符的内容,听两遍。
(      ) 1. A. hear                                               B. how                                               C. headache       
(      ) 2. A. black                                        B. back                                               C. speak
(      ) 3. A. move                                        B. match                                        C. Maths
(      ) 4. A. easy                                               B. dear                                               C. difficult
(      ) 5. A. what                                               B. who’s                                        C. whose
(      ) 6. A. 4:12                                               B. 4:20                                               C. 4:02
(      ) 7. A. have a look                                 B. have a try                                        C. look at
(      ) 8. A. go swimming                                 B. go climbing                                 C. go skating
(      ) 9. A. B. C.
(      ) 10. A. B. C.
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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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