C
I am peter Hodes ,a volunteer stem courier. Since March 2012, I've done 89 trips of those , 51 have been abroad, I have 42 hours to carry stem cells（干细胞）in my little box because I've got two ice packs and that's how long they last, in all, from the time the stem cells are harvested from a donor(捐献者) to the time they can be implanted in the patient, we’ve got 72 hours at most, So I am always conscious of time.
I had one trip last year where I was caught by a hurricane in America. I picked up the stem cells in Providence, Rhode Island, and was meant to fly to Washington then back to London. But when I arrived at the check-in desk at Providence, the lady on the desk said:”Well, I’m really sorry, I’ve got some bad news for you-there are no fights from Washington.”So I took my box and put it on the desk and I said:”In this box are some stem cells that are urgently needed for a patient-please, please, you’ve got to get me back to the United Kingdom.”She just dropped everything. She arranged for a flight on a small plance to be held for me.re-routed(改道)me through Newark and got me back to the UK even earlier than originally scheduled.
For this courier job, you’re consciously aware than that box you’re got something that is potentially going to save somebody’s life.
29.Which of the following can replace the underlined word “courier” in Paragraph17
30.Why does Peter have to complete his trip within 42hours?
31.Which flight did the woman put Peter on first?
本题属于判断题，根据以上解题思路可知，作者是一名干细胞运输志愿者，所以答案选B。
推理判断题。根据文章第一段“Since March 2012, I've done 89 trips of those”可知，自从2012年三月开始，我已经完成了89次旅程，再根据下一句出现的carry搬运，可知是送货员。
对于文章内容理解不到位。
本题属于细节题，根据以上解题思路可知，Peter必须在42小时内完成他的运输，是因为冰块不能维持更长的时间，所以答案选D。
事实细节题。根据文章第一段“I have 42 hours to carry stem cells（干细胞）in my little box because I've got two ice packs and that's how long they last,…”可知，我只有42小时运输干细胞因为我只有两块冰袋，并且42个小时是它们能维持的时间。
对于文章细节内容把握不足。
本题属于细节题，根据以上解题思路可知，那位女士给Peter安排的第一趟飞机是到Newark，所以答案选B。
事实细节题。根据文章最后一段“She arranged for a flight on a small plance to be held for me.re-routed(改道)me through Newark and got me back to the UK even earlier than originally scheduled.”可知，柜台的女士帮助作者从Newark改道提前回到目的地UK。
对于文章后半段理解不足。