学进去-教育应平等而普惠
试题
类型:听音,选择听到的内容
难度系数:0.65
所属科目:小学英语
听录音,选出你所听到的内容,将其序号填到题前括号内。
(      ) 1. A. R        B. G        C. Y
(      ) 2. A. Pp        B. Dd        C. Bb
(      ) 3. A. b c k        B. c b k        C. c k b
(      ) 4. A. I        B. am        C. I’m
(      ) 5. A. morning        B. afternoon        C. evening
(      ) 6. A. class        B. sister        C. Miss
(      ) 7. A. he’s        B. she’s        C. he
(      ) 8. A. good        B. goodbye        C. grandpa
(      ) 9. A. father       B. mother        C. brother
(      ) 10. friend        B. father        C. family
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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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