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
听句子,选单词或短语。
(      ) 1. A. coach                           B. country                           C. crossing
(      ) 2. A. police officer              B. fisherman                           C. businessman
(      ) 3. A. Germany                    B. Scotland                           C. Alaska
(      ) 4. A. cooks Chinese food       B. does Chinese kung fu              C. studies Chinese
(      ) 5. A. at a university              B. in a gym                           C. on a plane
(      ) 6. A. drawing cartoons              B. climbing mountains              C. watching TV
(      ) 7. A. this morning              B. this afternoon                    C. this evening
(      ) 8. A. football club              B. science club                    C. reading club
(      ) 9. A. by sled                           B. by ferry                           C. by ship
(      ) 10. A. don’t worry              B. don’t be sad                    C. don’t be afraid
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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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