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. swim                         B. spring                            C. season
(      ) 2. A. not                            B. cat                                 C. hot
(      ) 3. A. cow                            B. come                            C. cold
(      ) 4. A. have lessons                 B. have bananas                  C. have picnics
(      ) 5. A. go swimming               B. go boating                       C. go climbing
(      ) 6. A. cold winter                  B. warm spring                    C. cool autumn
(      ) 7. A. fly kites                       B. try again                         C. make kites
(      ) 8. A. in spring                      B. in summer                       C. in autumn
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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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