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。
______)1. A. see       B. sit       C. sing
______)2. A. feel       B. free       C. fever
______) 3. A. has       B. hurts       C. fits
______)4. A. something    B. anything    C. nothing
______)5. A. ill       B. ear       C. year
______)6. A. see the doctor    B. see a film    C. see the dentist
______) 7. A. eat and drink    B. eat but drink    C. eat or drink
______)8. A. put on       B. put off       C. take off
______)9. A. in April       B. in March    C. in May
______)10. A. have the rest    B. have a headache    C. have a rest
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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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