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。
(     ) 1. A. dress                       B. jeans                            C. shoes
(     ) 2. A. swimming                 B. skating                         C. drawing
(     ) 3. A. mouth                      B. head                            C. hand
(     ) 4. A. spring                      B. autumn                         C. winter
(     ) 5. A. playground               B. party                            C. park
(     ) 6. A. so big                      B. so fun                           C. so nice
(     ) 7. A. play football             B. play basketball               C. play games
(     ) 8. A. a glass of water          B. a glass of juice               C. a cup of coffee
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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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