Question

Chemical processes _______in the treatment of materials for clothes _______the environment badly in some countries nowadays．

A．involve；damaging	B．involved；damaged
C．involving；damage	D．involved；damage

Answer 1

D

考查非谓语动词作后置定语和谓语动词。_______in the treatment of materials for clothes中_______是非谓语动词作后置定语，修饰Chemical processes，Chemical processes和动词involve是动宾关系，所以用过去分词形式，排除A,C；第二空是作句子的谓语，根据nowadays，可知要用一般现在时态。所以选D。