2016年6月大学英语六级高频句子：产生原因

　　英语六级考试作文在试卷中难度较大，因而复习时也会被大家刻意重视，新东方在线英语六级频道搜集了一些六级高频句子，希望可以为大家带来帮助。

　　产生原因

　　i. resulted in an increasing proportion of females the proportion of

　　With deepening of the aging, now health of the aged is important problem that influence current and future social and economy development of China

　　ii. now the aging problem in China has caused attention of many people

　　iii. Tertiary industry proportion increases is trend of a history, china also takes this route necessarily.

　　2016年6月大学英语六级高频句子分类盘点