55、twelve point three six　 12.36

54、six point two　 6.2

53、five million　 5,000,000

52、three hundred and twenty　 320

51、four thousand　 4,000

50、a billion　 1,000,000,000

49、因为because of ---- because

48、国内外的中国人people in China and abroad

47、在某人的帮助下 with the help of sb = with sb’s help

46、受教育get an education