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
Listen and answer( 根据你在录音中的问题,将下面每组答句中最合适的答案选出来,并将其前面的字母符号填在句子前面的括号里,每小题2分,共10分)
(1)A. I like playing sports.
B. I can play football.
C. I often play basketball.
(2)A. She’s thin.
B. She’s at home.
C. Miss Sue.
(3)A. I like Mr. Liu.
B. I like English.
C. I like tofu.
(4)A. I do my homework.
B.I can sweep the floor.
C. I’d like some chicken.
(5)A. No, there isn’t.
B. Yes, they are.
C. Yes, there are.
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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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