学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.65
所属科目:小学英语
Read and choose(圈出在意义上不属于同一类的单词,圈在字母代号上):
(______) 1. A. hand               B. head               C. read
(______) 2. A. white               B. yellow               C. apple
(______) 3. A. meat               B. bear               C. lion
(______) 4. A. box               B. six               C. fox
(______) 5. A. green               B. yellow               C. grass
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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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