题目内容：
Questionsarebasedonthefollowingpassage Nowadays,airtravelisvery（41）．WearenotsurprisedwhenwewatchonTVthatapoliticianhastalkedwithFrenchPresidentinParisandattendedameetinginBeijingonthesameday．
However,ifapersontakeslong-distanceflyingfrequently,hecanbesotiredthathemaybefeelhisbrainisinonecountry,his（42）inanother．Inaword,he（43）knowswhereheis．
Whenweflyfromeasttowestorviceversa,the（44）weexperienceaftertakingalong-distanceflyingisaggravated,becausewecrosstimezones．Accordingtodoctors,airtravelers,aftercrossingseveraltimezones,areinno（45）togotowork,andtheyshouldgostraighttobed（46）arrival．
Astoairlinepilotswhooftenlivebytheirownwatchesandignorelocaltime,thereisnoneedforthemtoworryabouttheirhealthalthoughtheysometimeshavebreakfastatmidnight,becausetheyareusedto（47）andarephysicallyfit．
Manybusinessmenlikelong-distanceflights,thinkingtheyare（48）tohavebeenchosenandtheyareoutforpromotion．Theyarelucky．ifthecompanyfollowsthedoctor'sadviceandallowthemtorestforadayortwobeforeworking．However,sometimesthemanagerissoenergeticthathebelieveseveryoneis（49）tobeasfitasheis．Sincehehasneverfeltuncomfortableafterflyinghimself,theworkheassignsisso（50）thattheemployeeistooexhaustedtocarrytheworkoutsatisfactorily．Thatisdisastrousfortheemployee'shealthandthecompany'sreputation．
第（41）题选 A．ordinary
B．common
C．plain
D．usual
参考答案：
答案解析：