职称英语考试模拟试题2017年职称英语考试模拟试题古来一切有成就的'人，都很严肃地对待自己的生命，当他活着一天，总要尽量多劳动，多工作，多学习，不肯虚度年华，不让时间白白地浪费掉。下面是小编为大家搜索整理的2017年职称英语考试模拟试题，希望能给大家带来帮助!更多精彩内容请及时关注我们应届毕业生考试网!单项选择题1、Safetyofficialshaveearnestly,questionedwhethertheincreaseduseofsyntheticmaterialsheightenstheriskoffire.A.cautiouslyB.severelyC.accuratelyD.seriously2、Wehavearesponsibilitytoensureournation'scontinuedprosperityandthemostsensiblewaytodothisisbyinvestmentinbasicscientificresearch.A.effectiveB.efficientC.significantD.reasonable3、阅读材料，回答题。HowdoesOrganismsWardoffInvadersThelivelihoodofeachspeciesinthevastandintricateassemblageoflivingthingsdependsontheexistenceofotherorganisms.Thisinterdependenceissometimessubtle，sometimesobvious.Perhapsthemoststraightforwarddependenceofonespeciesonanotheroccurswithparasites，organismsthatliveonorinotherlivingthingsandderivenutrientsdirectlyfromthem.Theparasiticwayoflifeiswidespread.Amultitudeofmicroorganisms(includingvirusesandbacteria，andanarmyofinvertebratesorcreatureslackingaspinalcolumn(includingcrustaceans，insects，andmanydifferenttypesofworms)maketheirlivingsdirectlyattheexpenseofothercreatures.Inthefaceofthisonslaught，livingthingshaveevolvedavarietyofdefensemechanismsforprotectingtheirbodiesfrominvasionbyotherorganisms.Certainfungiandevensomekindsofbacteriacreatesubstancesknownasantibioticsintotheirexternalenvironment.Thesesubstancesarecapableofkillingorinhibitingthegrowthofvariouskindsofbacteriathatalsooccupythearea，therebyeliminatingorreducingthecompetitionfornutrients.Thesameprincipleisusedindefenseagainstinvadersinothergroupsoforganisms.Forexample，whenattackedbydisease--causingfungiorbacteria，manykindsofplantsproducechemicalsthathelptowardofftheinvaders.Membersoftheanimalkingdomhavedevelopedavarietyofdefensemechanismsfordealingwithparasites.Althoughthesemechanismsvaryconsiderably，allmajorgroupsofanimalsarecapableofdetectingandreactingtothepresenceof“foreign”cells.Infact，throughouttheanimalkingdomfromspongestocertaintypesofwornlsshellfish