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学进去-教育应平等而普惠
试题
类型:完形填空
难度系数:0.40
所属科目:小学英语
完形填空。
It's six o'clock in the afternoon. It's time for _______! Jenny and Li Ming are __________. Jenny's mother is _________ in the kitchen. Jenny and Li Ming help Mrs.Smith _________ the vegetables. After supper, Mrs.Smith washes the ________ dishes. Li Ming dries the dishes. Now the dishes are clean and dry.
1.A. breakfast    B. lunch    C. supper
2.A. arrive    B. meet    C. hungry
3.A. cooks    B. cook    C. cooking
4.A. washing    B. washes    C. wash
5.A. clean    B. dirty    C. dry
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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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