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
找出你所听到的内容,填序号。
(      ) 1. A. cat                           B. fat                           C. can
(      ) 2. A. many                           B. any                           C. very
(      ) 3. A. her                           B. here                           C. hair
(      ) 4. A. fourteen                    B. fifteen                           C. forty
(      ) 5. A. small                           B. tall                           C. ball
(      ) 6. A. have a look                    B. have a book                    C. have a try
(      ) 7. A. a cup of tea                    B. a cup of coffee             C. a glass of milk
(      ) 8. A. in the fridge                    B. on the fridge             C. in the kitchen
(      ) 9. A. these socks                    B. those socks                    C. this box
(      ) 10. A. big eyes                    B. big ears                    C. small eyes
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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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