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
听辨句子。
(     ) 1. A. Hello, Mr dog!                                                B. Hello, Mr giraffe!
(     ) 2. A. Are you Rainy?                                   B. Are you ready?
(     ) 3. A. I’m fine.                                         B. I’m fine, too
(     ) 4. A. Glad to meet you.                                  B. Glad to see you.                      
(     ) 5. A. What’s this?                                     B. What’s that?
(     ) 6. A. Read, please.                                    B. Don’t read.
(     ) 7. A. It’s a cat.                                             B. It’s a bird.
(     ) 8. A. It’s a green snake.                            B. It’s a black snake.
(     ) 9. A. Don’t talk.                                            B. Talk, please.
(     ) 10. A. Happy Mother’s Day!                        B. Happy Women ’s Day!
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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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