14. (25209-!-item-!-188;#058&001758) Having finally reached a tentative labor agreement with its company's pilots,it must now be determined by the airline's board of directors how the airline can both increase profits and compete more effectively for customers than they did in the past.
看首句 用 having reached 可以修饰it 这个是prep没有划线的部分
prep明明白白告诉你 having reached 是可以修饰的名词的
但是 28. (26003-!-item-!-188;#058&002229) Polio, although it is eradicated in the United States, it continues elsewhere and is able to be brought into the country by visitors.
选项(D) Although having been eradicated in the United States, polio still continues elsewhere and is capable of being
prep的错误原因中说(D) having been eradicated使用错误,应该去掉having been
因为1) 现在分词的完成时态不能作定语修饰名词: 如 evidence having been proved…是错误的,可以 改为 evidence proved… 或evidence that have been proved…