【单选题】B
InFebruary2006,LydiaAngyiouandhertwosonswerewalkingthroughtheirvillageinnorthernCanadA、Thesoundofchildrenshoutingmadeherturnaroun
D、Toherhorror,Lydiasawa700-poundpolarbearbehindhereyeingherseven-year-oldson.Gettingbetweenthebearandherchild,Lydiayelledatthechildrentorunaway.Shethenbeganhittingandkickingtheanimalashardasshecoul
D、A、neighborwhoheardallthenoisecameandshotthebear.ButeveryoneagreeditwasLydiawhohadsavedherchildren'slives.A、localpolicemandescribeditthisway:"…Iguesswhenyourbackisupagainstthewall,…wecomeupwithsuper-humanstr ength."
Wheredoesthis"super-humanstr ength",courageandquickthinkingcomefrom?Expertssayitcomesfromstr ess!Instr essfulsituations,thebodyreleaseschemicalsthatprepareittotakeaction.Thesechemicalsgivepeoplethespeedandstr engththeyneedtofightd angerorrunawayfromit.
Whenwethinkofstr ess,weusuallythinkofitsnegativeeffects.Studies,though,showthatmoderatelevelsofstr essareactuallyhelpful.Infact,thewayweperformisusuallyaffectedbytheamountofstr esswefeel.
Str esscausesthebraintoreleaseadrenaline(肾上腺素)whichinturnincreasesourenergyandexcitement.Thechemicalgivesusclearermindsandhelpsustodomore.Thisiswhysomepeoplesaytheyworkbetterunderadeadline.
Adrenalinethatisnotr eleasedforlongperiodsoftimecancauseustoincreaseandstr engthenourabilitiesinsteadofweakeningthem.Wesometimesturnoutourverybestworkwhenwepushourselvestothelimit.Str esscanalsomakeusmoreconfident.Handlingsmallamountsofstr essnowpreparesusforhandlingserioussituationsinthefuture.Whoknows?Today'sstr essmayevenprepareforthenextpolarbearthatcomesalong!
55.Inthefirstparagraph,thecaseofLydiaAngyiouismentionedto______.
A、intr oducethetopictobefollowed
B、praiseLydiaAngyiouforherbravery
C、remindusoftheunexpecteddangeroflife
D、showtheimportanceofsuper-humanstr ength
56.Whatd oesthepolicemanprobablymeanbysaying"yourbackisupagainstthewall"?[
A、Youarehelpe
D、B、Youareinspire
D、
C、Youareconfident.
D、Youarecornere
D、
57.Whatwouldbethebesttitleforthepassage?
A、BraveMotherB、TheCauseofStr ess
C、TheBenefitofStr ess
D、Super-humanStr ength
