学进去-教育应平等而普惠
试题
类型:听力题
难度系数:0.85
所属科目:小学英语
听录音.给所听问句选择恰当的答语。
____)1.A.Yes, he will.        B.No, he won’t.  C.By train.
____)2.A.Yesterday.          B.No, it isn’t.  C.At eight o’clock.
____)3.A.He works at school.  B.He will play basketball.  C.He likes playing the piano.
____)4.A.Yes, he is.     B.Yes, he does.  C.Yes, he will.
____)5.A.They are playing football.  B.They will go to the cinema.  C.They work on a farm.
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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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