2012年12月大学英语六级阅读专项练习题32We can begin our discussion of “population as global issue” with what most persons mean when they discuss “the population problem”: too man
2012年12月大学英语六级阅读专项练习题33Let children learn to judge their own work. A child learning to talk does not learn by being corrected all the time; if corrected too much, he will
Newspapers Newspapersaretheoriginalformofbroadbandcommunication,adistinctionnotalwaysrecognizedintheageoftheInternet.Longbeforewehadcomputers,television,radio,telephonesandtelegraph,newspaperswerethe
WhatisitaboutAmericansandfood?Welovetoeat,butwefeel1aboutitafterward.Wesaywewantonlythebest,butwestrangelyenjoyjunkfood.We’re2withhealthandweightlossbutfaceanunprecedentedepidemicofobesity(肥胖).P
Smartphones Asmartphoneisonedevicethatcantakecareofallofyourhandheldcomputingandcommunicationneedsinasingle,smallpackage.It’snotsomuchadistinctclassofproductsasitisadifferentsetofstandardsforcellph
TheFishandtheForest FewwildlifespectaclesinNorthAmericacomparetothesightofbearsgatheredalongstreamsandriverstoscoopupspawning(产卵)salmon.Thehungrybearshavelongattractedattention,particularlyfromfi
OurEndangeredOceans Beforeanyonecanhonestlycarehowimportantitistoprotectmarinehabitats（生活环境）,oneneedstoappreciatethevastquantitiesofmarinelifethatexistsintheocean.Itishardforsomepeopletor
TheHydrogenEconomy Whilefossilfuelshaveplayedanimportantroleingettingsocietytothepointitisattoday,therearefourbigproblemsthatfossilfuelscreate. Airpollution-Whencarsburngasoline,theywouldideallyburni
Seven Steps to a More Fulfilling Job Many people today find themselves in unfulfilling work situations. In fact, one in four workers is dissatisfied with their current job, according to the recent
SevenwaytoSavetheWorld Forgettheoldideathatconservingenergyisaformofself-denial—ridingbicycles,dimmingthelights,andtakingfewershowers.Thesedaysconservationisallaboutefficiency:gettingthesame—orbe