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,选出听到的单词或短语。
(       ) 1. A. her                                     B. hair                                             C. here
(       ) 2. A. pink                                   B. skirt                                                 C. sweet
(       ) 3. A. on                                     B. take                                          C. talk
(       ) 4. A. small                             B. short                                              C. all
(       ) 5. A. clothes                              B. close                                              C. clock
(       ) 6. A. swim                              B. run                                             C. either
(       ) 7. A. tail                                   B. tall                                            C. tree
(       ) 8. A. Miss                                   B. mouth                                         C. meet
(       ) 9. A. man                              B. woman                                      C. snowman
(       )10. A. two glasses of milk        B. two cups of tea        C. two cups of milk
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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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