[单选题]资料：Business,academicandcivicleadersinCambridgehavewarnedthatoneofBritain’smajoreconomicgrowthcitiesisunderthreatunlessthegovernmentactsquicklytorestoretrustpost-Brexit.
CompanyexecutivesandeducationistsreportsomehighlyskilledforeignnationalsquittingorrefusingtocommittonewjobsinBritainbecauseofuncertaintyovertheirfuturelegalstatushere.IthasinthepastboastedofcreatingemploymentfasterthanChina,amidaboominthetechnologyandbiosciencesectors,whichledtothecitybeinglabelled”Silliconfen”,butnowtherearefearsofabigslowdown.
“ThisisauniqueeconomicassetforEurope,”saidLordLansley,theformerConservationMPforSouthCambridgeshire,afteraspeciallyconvenedmeetingtodiscusstheproblemswithlocalpoliticiansandothers.”Thereisa[political]vacuumoutthereandtheredoesnotseemtobea[postBrexit]plan.Therearethingsweneedandifwegetthemwecancontinuetoprosperandbemoresuccessful”,Lansleyadded.
HehasdrawnupaCambridgedeclarationwithhiscolleaguesmeanttoreassureexistingacademicandbusinessstafffromabroadthattheirpresencewillbeprotected.”Wearecommittedtointernationalcollaborationinresearch,scienceandtheexploitationofinnovative,knowledge-intensiveenterprises,”saysthedocument.
LansleysayshewillbepushingtheBritishgovernmenttogiveacquiredrightstothe9,000EuropeancitizenslivingintheEastAngliancityoutofatotalpopulationof124,000.HealsowantstoseeacontinuationoffreelabourmovementtoallowEuropeanstocometoworkandstudyinCambridgeandsays”Weneedfreemovementforthemtocometoworkandtostudyhere.”
Accordingtothearticle,whatisthethreatthatBritain’smajoreconomicgrowthcitiesare

Serious unemployment

Wars

Foreign talents drain

Social instability

本题考查的是细节理解。【关键词】what;threat;Britain’smajoreconomicgrowthcities 【主题句】第1自然段Business,academicandcivicleadersinCambridgehavewarnedthatoneofBritain’smajoreconomicgrowthcitiesisunderthreatunlessthegovernmentactsquicklytorestoretrustpost-Brexit.剑桥的商业，学术和公民领袖已经警告说，除非政府迅速采取行动恢复英国脱欧后的信任，否则英国主要经济增长城市之一将面临威胁。第2自然段CompanyexecutivesandeducationistsreportsomehighlyskilledforeignnationalsquittingorrefusingtocommittonewjobsinBritainbecauseofuncertaintyovertheirfuturelegalstatushere.公司高管和教育工作者报告说，一些高技能的外籍人士因其在英国的未来法律地位不确定而辞职或拒绝在英国从事新工作。【解析】本题的问题是“根据这篇文章，英国主要经济增长城市面临的威胁是什么？”。选项A意为“严重失业”；选项B意为“战争”；选项C意为“外国人才流失”；选项D意为“社会不稳定”。根据主题句可知，英国主要经济增长城市面临的威胁是外国人才的流失，故选C。