问题
选择题
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
答案
D
involve涉及，包含，be involved in sth 与……有关联。涉及到……、第一空考查动词的-ed形式，做后置定语，involve与processes这里是动宾关系，故用过去分词形式；第二空为本句的谓语动词，根据后面的时间状语，nowadays 可知选damage.