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,选出你所听到的单词或短语。
(     ) 1. A. basketball             B. football          C. robot
(     ) 2. A. jump             B. sleep             C. play
(     ) 3. A. yes               B. yeah            C. great
(     ) 4. A. very            B. nice               C. skate
(     ) 5. A. swim          B. mum               C. shout
(     ) 6. A. where            B. well             C. what
(     ) 7. A. play table tennis               B. play basketball             C. play football
(     ) 8. A. swim well             B. very well             C. sing well
(     ) 9. A. have a try            B. have a look             C. have an apple
(     ) 10. A. can fly               B. can skate        C. cannot fly
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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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