学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.64
所属科目:小学英语
听录音, 选择你所听到的选项。(每小题听两遍。10分)
(1)A. night          B. light            C. bright
(2)A. match          B. watch            C. wash
(3)A. touch          B. much            C. watch
(4)A. help           B. here             C. half
(5)A. quarter         B. quietly          C. quick
(6)A. lie             B. tie              C. pie
(7)A. plus           B. past             C. puppet
(8)A. 5:10           B. 4:50             C. 5:50
(9)A. have breakfast  B. have lunch       C. have dinner
(10)A.Take an umbrella with you.
B. Take an ice-cream with you.
C. Take an egg with you.
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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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