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,选出你所听到的单词或短语。(听两遍)
(      )1. A. happy                              B. hurry                            C. hungry
(      )2. A. milk                                B. ill                                 C. tall
(      )3. A. warm                              B. farm                              C. water
(      )4. A. tiger                                B. tired                              C. kite
(      )5. A. have a pie                       B. have a cake                      C. have some water
(      )6. A. go to bed                         B. go to school                    C. go swimming
(      )7. A. good evening                    B. good morning                 C. good night
(      )8. A. hungry and thirsty             B. hungry and tired             C. feel hungry
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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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