读城镇化的动力机制关系图,完成下面小题
1.图中a、b、c对应的是( )
①剩余劳动力②提供就业岗位③劳动生产率提高
A.①→②→③ | B.①→③→② | C.③→②→① | D.③→①→② |
A.扩大了城乡收入差距 | B.主导因素是生态环境 |
C.缓解城市老龄化问题 | D.加剧农村的人地矛盾 |
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