问题补充:
President Xi Jinping demanded that the environmental problems paid special attention to.
A. referred to being
B. referred to be
C. refer to being
D. refer to be
答案:
A. referred to being
(答案→)B. referred to be
C. refer to being
D. refer to be
解析:
试题分析:考查非谓语动词。由语义可知refer to 和problem之间是被动关系,所以用过去分词做后置定语,而demand后面宾语从句的谓语动词应该用should +动词原形,所以答案选B。句意:习近平主席要求提到的环保问题应该给予特别关注。