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,根据所听内容选出你所听到的单词或词组。(听两遍)
(      ) 1. A. father                           B. family                                 C. funny
(      ) 2. A. eye                           B. ear                                 C. nose
(      ) 3. A. long                           B. short                                 C. big
(      ) 4. A. mouth                           B. mango                                 C. monkey
(      ) 5. A. bathroom                    B. bedroom                           C. living room
(      ) 6. A. these socks                    B. those socks                           C. this box
(      ) 7. A. seventeen                    B. seventy                           C. seven
(      ) 8. A. apple                           B. pineapple                           C. grape
(      ) 9. A. panda                           B. tiger                                 C. horse
(      ) 10. A. a cup of tea             B. a glass of milk                    C. a glass of juice
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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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