By 1940, the pilot Jacqueline Cochran held seventeen offcial national and international speed records, and she earned them at a time when aviation was still so new for many of the planes she flew to be of dangerously experimental design.
(A)and she earned them at a time when aviation was still so new for many of the planes she flew to be
(B)earning them at a time that aviation was still so new for many of the planes she flew to be
(C)earning these at a time where aviation was still so new that many of the planes she flew were
(D)earned at a time in which aviation was still so new such that many of the planes she flew were
(E)earned at a time when aviation was still so new that many of the planes she flew were
题目分析：划线里面的earned应该和划线外的held形成一个并列关系，用earning不合适，A加了she，但是earned和held发起者没有变化，都是那个人，没有必要再加一个she了，就类似于“英吉不仅杀人而且他放火”这句话一样，明明杀人放火都是英吉干的，没必要在放火前面再加一个他了。D和E进行比较，比较大的区别就是后边半句，D用so 后面又用such that，so和such意思重复了，E意思没有重复，选E。
