首先这句话的主干是The article opens and closes with descriptions,然后of two news reports是修饰descriptions的,后面的each____one major point in contrast with the other是修饰descriptions of two news reports的.
因为一个英文句子中只能有一个谓语,所以只能选择答案中不是谓语的,故排除A,C.
接下来看each____one major point in contrast with the other与被修饰的descriptions of two news reports是什么关系,descriptions of two news reports意思是“两篇新报道的叙述”,each____one major point in contrast with the other是“各个/两者（叙述）的主要观点是相反的”,即,叙述的观点是相反的,修饰成分descriptions of two news reports与被修饰成分each____one major point in contrast with the other之间的关系是主动的,所以用表示主动关系的ING形式,不用表示过去、完成的made.
大致是这样.