学进去-教育应平等而普惠
试题
类型:听音,选择正确答案
难度系数:0.65
所属科目:小学英语
听录音,选出句子所缺的内容,将其序号写在括号里。
(      ) 1. Who is that _____?
A. woman                    B. man                           C. boy
(      ) 2. The _____ one is a bird.
A. black                           B. white                           C. red
(      ) 3. It has _____ eyes and _____ ears.
A. small; long             B. big; small                    C. small; big
(      ) 4. I want some _____ and a _____.
A. hot dog; milk              B. chicken; hot dog              C. chicken; Coke
(      ) 5. Let’s play _____ and _____.
A. hide; see                    B. seek; hide                           C. hide; seek
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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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