剑桥雅思的真题是官方出的练习册,与实际考试难易程度以及题型是一样的,并不是实际考试过的题目,而且听力也是copy的版本,所以这个停顿有时是会不一样的。
Personally, I think that very few have noted such an issue as I think that the pause is not purposely made and most likely it is random. I suggest you not to pay too much attention on this but rather you had better to spend as much time as possible to read the question beforehand during the breaks between two sections as well understanding of qeustions would greatly help you to comprehend what the CD would play.