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
听问句,选择正确的应答 (听两遍)。(每小题1分, 共5分)
(1)A. We like English.      B. I have Maths and Chinese.C. I don’t like Art.
(2)A. Yes, I do.            B. Yes, I can.              C. No. I’m not.
(3)A. It’s Saturday.       B. It’s today.             C. It’s a fine day.
(4)A. She plays the piano.  B. She is skating.          C. I play football.
(5)A. Very good.           B. Thank you.              C. OK.
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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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