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。
______) 1. A. fairy           B. air           C. hair
______) 2. A. classrooms           B. bedrooms       C. mushrooms
______) 3. A. city           B. pity           C. pig
______) 4. A. drink           B. drinking       C. think
______) 5. A. under           B. understand       C. stand
______) 6. A. put up           B. get up           C. hurry up
______) 7. A. my bag           B. my dad       C. my back
______) 8. A. so sad           B. so bad           C. too sad
______) 9. A. help you           B. help me       C. help her
______) 10. A. have some nice clothes       B. have any nice clothes       C. have any new clothes
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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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