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,选出你所听到的内容。(听两遍)
______) 1. A. them       B. they           C. their
______) 2. A. before       B. beside           C. behind
______) 3. A. late       B. cake           C. make
______) 4. A. colourful       B. wonderful       C. beautiful
______) 5. A. coat       B. jacket           C. sweater
______) 6. A. take on       B. take off       C. get off
______) 7. A. is good at       B. is good for       C. is bad for
______) 8. A. go to the party    B. go to the park       C. at the party
______) 9. A. make up       B. stand up       C. hurry up
______) 10. A. tired and hungry    B. tired and thirsty       C. hungry and thirsty
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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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