学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.65
所属科目:小学英语
选出不同类别的单词,将其编号填在括号内。
(____) 1.A. banana                B. pear            C. short
(____) 2.A. pencil                 B. car             C. ruler
(____) 3.A. pencil                 B. book            C. school
(____) 4.A. dog                   B. pig             C. play
(____) 5.A. red                    B. one             C. green
(____) 6.A. girl                B. teacher          C. bus
(____) 7.A. class               B. school           C. pen  
(____) 8.A. Chinese             B. English          C. class
(____) 9.A. mother              B. father           C. teacher
(____) 10.A. twelve             B. five          C. box
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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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