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:0.85
所属科目:小学英语
听录音,选出所听到的单词、词组或句子,本题读两遍。
(      ) 1. A. VOC       B. VCD       C. CEO
(      ) 2. A. jump       B. Jones       C. John
(      ) 3. A. under       B. umbrella       C. brother
(      ) 4. A. yellow       B. yo-yo       C. nose
(      ) 5. A. 6824       B. 6284       C. 8264
(      ) 6. A. black       B. blue       C. bread
(      ) 7. A. some fish       B. some Coke       C. some rice
(      ) 8. A. Touch your nose.       B. Touch your ear.       C. Touch your face.
(      ) 9. A. Look at the pig.       B. Look at the bear.       C. Look at the bird.
(      ) 10. A. Have some juice.       B. Have some eggs.       C. Have some milk.
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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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