大学英语综合教程答案大学英语综合教程答案.docx

3.Many?products?for?sale?seem?to?scream?at?us,?Buy?me!?Buy?me!?Advertising?is?a?big?business?in?our?world?with?many?products?competing?for?our?attention.?Think?of?the?last?time?you?bought?clothes.?You?probably?noticed?the?variety?of?colors,?patterns,?fabrics?and?brands?you?could?choose?from.?Which?kind?of?soft??drink?would?you?like?to?have?today?or?what?kind?of?computer?do?you?want??Advertisers?are?skilled?in?the?art?of?making?their?products?look?the?best?to?appeal?to?our?senses.?But?products?arent?always?what?they?seem.?Sometimes?advertising?is?deceptive?and?as?consumers?,we?must?be?careful?about?what?we?choose?to?buy.?It?is?important?to?learn?to?compare?products?and?identify?our?purpose?in?purchasing?the?things?we?need.?But?the?good?thing?about?advertising?is?that?it?helps?people?to?make?decisions?and?refine?their?choices.?In?the?United?States,?the?Ad?Council?creates?timely?public?service?messages?to?the?nation.?Their?purpose?is?to?raise?awareness?of?public?problems?that?citizens?can?respond?to.?Inspiring?ads?cause?individuals?to?take?action?and?even?save?lives.?Pollution?in?America,?for?example?has?been?reduced?over?the?years?because?of?the?creative?Public?Service?advertisements?that?the?council?provides?Please,?please?dont?be?a?litter?bug,?cause?every?litter?bit?hurts.?Many?families?have?taught?their?children?to?place?litter?in?the?trash?can?in?response?to?this?catchy?phrase,?which?has?affected?generations?as?each?succeeding?generation?has?taught?their?children?not?to?litter.?4.Nature?imposes?difficult?conditions?upon?the?earth?from?time?to?time?.?The??tornado?and?forest?fire?destroy?natural?resources?,homes?and?other?structures?,and?very?often?harm?or?kill?people?.?Technological?tragedies?happen?with?little?or?no?warning?as?we?see?trains?crash?and?airplanes?fall?from?the?sky?shortly?after?take-off.?As?tragic?as?calamities?are?,?they?seem?to?bring?out?the?best?in?human?nature?.?people?trained?in?emergency?care?arrive?at?the?scene?and?begin?assisting?the?injured?