小题1:developed（quickly）（ 形式及时态错不给分）
小题2: Because there’re more mouths to feed and less income.
小题3: The level of education is very low.
小题4:Main causes of poverty in the world today.
小题5:Lack of education. People without good education can’t adapt to society, so they’re much likely to suffer from poverty. （答案可不同）