2016年6月大学英语六级高频句子：质疑

　　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。

　　质疑

　　i. they began to question Others question the vaccine's safety and effectiveness

　　ii. The fire raised doubts about the safety of the fire alarm systems scientific reasonable and effective management

　　iii. The seriousness of the situation has been much exaggerated by the press

　　2016年6月大学英语六级高频句子分类盘点