1 H' Q9 d! a, q- b6 u$ a* T- b Eg: It is an undeniable fact that environmental pollution becomes increasingly serious. ' j( A. j. q( p; U& A
转自:考试网 - [Examw.Com] ; n/ q* `: J( e8 Y+ H$ O- \# r4 Y 环境污染变得越来越严重是不可否认的事实。 5 z! R! F0 l( A& T1 J& \+ }) O
Eg: No one can deny the basic fact that it is impossible for average workers to master those high-technology skills easily. q! V9 W* G6 V8 V4 n+ Q
C) C0 N m% T4 e 没有人能否认这一基本事实:对于一般工人来讲,轻松掌握这些技术是不可能的。