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词组,并将序号填在题前括号内。注意:每题连续听两遍。
(      ) 1. A. old                         B. kind               C. helpful
(      ) 2. A. young                      B. funny             C. strict
(      ) 3. A. Tuesday                  B. Thursday        C. Saturday
(      ) 4. A. do sports                 B. read books        C. play football
(      ) 5. A. wash my clothes       B. watch TV        C. read books   
(      ) 6. A. sandwich                 B. salad               C. hamburger
(      ) 7. A. health                      B. delicious        C. sweet
(      ) 8. A. sunny                      B. cloudy            C. windy
(      ) 9. A. head                       B. foot               C. hair
(      ) 10. A. see                       B. feed               C. meet
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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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