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,选择适当的答语,将字母标号写在括号内。
(     ) 1. A. No problem.                                               B. They will go to the zoo.
(     ) 2. A. We can’t live without water.                           B. Because we are back at school.
(     ) 3. A. Hold on, please. Mike, it’s for you.                  B. What’s your telephone number, Lisa?
(     ) 4. A. The sweet and sour fish is delicious.               B. No, I’d like a glass of orange juice.
(     ) 5. A. Cold. It’s snowing.                                      B. He lives on a farm.
(     ) 6. A. This is a nice girl.                                        B. I’d like some vegetables.
(     ) 7. A. My uncle lives in the mountains.                      B. The red T-shirt will go with my shorts.
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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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