学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.94
所属科目:小学英语
Read and choose(读一读,圈出在意义上不属于同一类的单词,圈在字母代号上):
(______) 1. A. my                   B. your               C. she
(______) 2. A. long               B. hair               C. face
(______) 3. A. can               B. are               C. is
(______) 4. A. heads               B. ears               C. mouth
(______) 5. A. lion               B. cow               C. panda
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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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