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。(听两遍)
(      ) 1. A. can't                           B. climbing                         C. cough
(      ) 2. A. core                           B. sorry                                C. cold
(      ) 3. A. every                         B. fever                                C. fifty
(      ) 4. A. take                           B. egg                                 C. headache
(      ) 5. A. any                            B. many                              C. may
(      ) 6. A. have to                       B. speak to                           C. go to
(      ) 7. A. have lessons                 B. come to school                 C. see you
(      ) 8. A. a hot dog                      B. a nice cook                      C. go to see the doctor
(      ) 9. A. take some pills             B. take care                         C. take some cakes
(      ) 10. A. at home                      B. at a party                         C. at school
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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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