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
选出你所听到的单词,每题听两遍。
(       ) 1. A. left        B. right             C. street
(       ) 2. A. house        B. cinema        C. station
(       ) 3. A. listen        B. read        C. talk
(       ) 4. A. drink        B. boat        C. clock
(       ) 5. A. food        B. tomato        C. egg
(       ) 6. A. far        B. run        C. fast
(       ) 7. A. bread        B. sorry        C. sweets
(       ) 8. A. horse        B. sheep        C. bear
(       ) 9. A. ice        B. want        C. fruit
(       ) 10. A. family        B. subject        C. Chinese
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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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