学进去-教育应平等而普惠
试题
类型:判断句子和图片是否相符
难度系数:0.65
所属科目:小学英语
看图,判断句子是(T)否(F)正确。

____)1. —Where is the book? — It's on the desk.
____)2. The yellow bag is in the desk.
____)3. —Is the ruler under the book?  —Yes, it is.
____)4. —Is the pencil box under the desk?  —No, it isn't.
____)5. The pencil is in the desk.
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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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