学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.85
所属科目:小学英语
听句子,选出你所听到的内容。(10分)
(     ) (1) A. concert       B. contest     C. picnic
(     ) (2) A. everyone       B. eleven    C. elephant
(     ) (3) A. piano      B. violin      C. guitar
(     ) (4) A. 6:45       B. 7:15      C. 6:30
(     ) (5) A. get there   B. get together    C. get here
(     ) (6) A. opera        B. project     C. plan
(     ) (7) A. walk    B. winter     C. write
(     ) (8) A. January 2nd    B. June 2nd    C. July 2nd
(     ) (9) A. making noise   B. making planes  C. making kites
(     ) (10) A. fly a kite   B. write a card   C. ride a bike
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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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