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,选出你所听到的内容。(听两遍)
_____) 1. A. busB. busyC. but
_____) 2. A. sweaterB. sweetC. swing
_____) 3. A. bedroomB. living roomC. kitchen
_____) 4. A. helpB. comeC. cook
_____) 5. A. sleepingB. sweepingC. washing
_____) 6. A. clean the table    B. clean the window    C. clean the door
_____) 7. A. cook breakfast    B. cook dinnerC. cook lunch
_____) 8. A. washing clothes    B. making the bedC. helping her mother
_____) 9. A. go awayB. go outC. go in
_____) 10. A. wash the dishes    B. wash your hands    C. watch TV
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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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