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
听辨句子。
(     ) 1. A. Let’s fly a kite!                                 B. Let’s run!
(     ) 2. A. What a beautiful kite!                         B. What a big mouse!
(     ) 3. A. Are you ready?                                 B. Are you OK?
(     ) 4. A. Can you cook?                            B. Can you climb?
(     ) 5. A. Sit down, please.                          B. Stand up, please.
(     ) 6. A. How many birds?                          B. So many birds.
(     ) 7. A. Your picture is beautiful.             B. Your English is good.
(     ) 8. A. Because I’m a bird.                           B. Because I’m a monkey.
(     ) 9. A. Don’t shout, please.                      B. Don’t laugh, please.
(     ) 10. A. How old are you?                       B. How are you?
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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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