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或短语。
(     ) 1. A. close       B. clothes       C. closes
(     ) 2. A. sit       B. fit       C. fat
(     ) 3. A. town        B. brown       C. down
(     ) 4. A. sheep       B. shop       C. ship
(     ) 5. A. kitchen       B. chick       C. check
(     ) 6. A. full       B. pull       C. put
(     ) 7. A. heartache       B. earache       C. headache
(     ) 8. A. turn right       B. turn left       C. turn back
(     ) 9. A. put on       B. point at       C. look at
(     ) 10. A. take off       B. take the metro       C. take the medicine
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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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