学进去-教育应平等而普惠
试题
类型:句子匹配
难度系数:0.65
所属科目:小学英语
读一读,选一选。
A. the Dragon Boat Festival
B. the Spring Festival
C. the Mid-Autumn Festival
D. the Lantern Festival
E. Chrismas
(  ) 1. We eat moon cakes.
(  ) 2. We eat yuanxiao and hang lanterns.
(  ) 3. We can see the dragon boat race.
(  ) 4. People always have a Christmas tree.
(  ) 5. We can eat dumplings.
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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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