品质
保障
品质保障放心学习
专注教育23年
始终提供高品质教育服务
老师
力量
AP资深老师
精选教师具有多年授课经验
知识+技巧，助你高效备考
精细
学习
系统化精细化提分
AP各项训练
全面提升AP备考能力
方便
实惠
优质课程实惠价格
远低于线下课程的价格
掌握AP纯干货
授课形式
高清录播+互动直播，实时更新。配套资料
精编密训教材，分阶快递。教研服务
答疑、批改、督学等全程服务。配套资料
精编密训教材，分阶快递。Nonexcludable-goods cannot be held back from those who desire access.
Poverty line-the official benchmark of poverty
Progressive tax-the government receives a larger percentage of revenue from families with larger incomes
*Regressive tax-collects a larger percentage of revenue from families with smaller incomes
*Proportional tax-collects the same percentage of income from all families
*Social security-program provides cash benefits and health insure to retired and disabled workers and their families
*Public Assistance-welfare typically provides temporary assistance to the very poor
*Supplemental Security Income-assists very poor elderly individuals who have virtually no assets and little or no social security entitlement
Unemployment compensation-provides temporary assistance to unemployed workers
*Medicaid provides health and hospitalization benefits to the poor
*Food stamp/Public Housing-programs provide food an
一站式课程咨询服务平台
