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:0.65
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. boat                           B. jacket                           C. basketball
(      ) 2. A. white                         B. like                              C. bike
(      ) 3. A. time                           B. Mum                            C. toy
(      ) 4. A. my bag                       B. my day                         C. my schoolbag
(      ) 5. A. on a rainy day             B. on a sunny day               C. on a windy day
(      ) 6. A. what about                  B. what time                      C. whose fan
(      ) 7. A. every day                    B. five days                       C. a fine day
(      ) 8. A. in autumn                    B. in winter                       C. in summer
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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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