年份 | 2012 | 2013 | 2014 | 2015 | 2016 |
新生人数 | +137 | +145 | +142 | +152 | +132 |
毕业生人数 | -140 | -148 | -125 | -152 | -155 |
①2016年一年级新生有( )人,六年级毕业生有( )人.
②( )年,新生人数和毕业生人数同样多.
③( )年,一年级新生人数比毕业生人数多.

同类型试题

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


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

