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
听问句,选答语,将正确的序号写到题前括号内。
(      ) 1. A. I went to the cinema.  B. I saw a film.        C. I went there last night.
(      ) 2. A. I’m 1.65 meters.        B. I’m 45 kilograms.   C. I’m 12.
(      ) 3. A. I’m watching TV.   B. I’m going to play sports. C. I like dancing.
(      ) 4. A. That’s too bad.     B. Have a good time.        C. I’m so happy.
(      ) 5. A. Mike is shorter than John.   
B. John is older than Mike.
C. John is shorter than Mike.
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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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