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
Listen and choose. (听录音,选出你听到的正确选项。)
(      ) 1. A. VCD                                  B. GPS                                  C. NBA
(      ) 2. A. 354                                  B. 345                                  C. 645
(      ) 3. A. eye                                  B. ear                                  C. arm
(      ) 4. A. blue                                  B. black                           C. brown
(      ) 5. A. ice                                  B. rice                                  C. juice
(      ) 6. A. cat                                  B. like                                  C. kite
(      ) 7. A. look                                  B. pencil box                    C. foot
(      ) 8. A. bird                                  B. bear                                  C. bread
(      ) 9. A. Mike                           B. milk                                  C. mouth
(      ) 10. A. five                           B. fine                                  C. have
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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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