5、。1.Whichofthefollowingcanreplacetheunderlinedword“courier”inParagraph1?A.providerB.deliverymanC.collectorD.medicaldoctor答案 B [词义推断题。由下文及作者在机场的经历可知,他是一名志愿者,从事干细胞递送的工作。所以答案为B。]2.WhydoesPeterhavetocompletehistripwithin42hours?A.Hecannotstayawayfromhisjobtoolong.B.Thedonorcanonlywaitforthatlong.
6、3C.Theoperationneedsthatmuchtime.D.Theicewon'tlastanylonger.答案 D [事实细节题。根据“...becauseI'vegottwoicepacksandthat'showlongtheylast.”一句可知,用于冷藏干细胞的两个冰块42小时之后就会融化,因此正确答案为D。]3.WhichflightdidthewomanputPeteronfirst?A.ToLondon.B.ToNewark.C.ToProvidence.D.ToWashington.答案 B [事实细节题。由第二段可知,由于没有飞往华盛顿的航班,航