试题答案1-5CDCCD6-10BACAA11-15DACBC16~20ACAAC21~25DDBAC26~30BADCF31-35CAACB36-40ACDCB41~45FTTTT46-50DBCBC51
kept52
crowded53
breathe54
everything57
part58
visit59:realize60
simple61
traffic62
those63
enjoy65
playing66
Afterawaroradisaster
Over27,000
Doctorswithexperienceintropicaldiseases
Becauseattheendofeachtaskhehasmadearealdifferencetopeople’slives
/Becausehisjobmakesadifferencetopeople’slives
(Itisexciting)becauseyoumaytraveltomanyplacesandhelppeopleinneed
(Itisdangerous)becauseyoumayworkindifficultconditions
(Anyreasonableanswerisacceptable