必修四unit2 知识点一.ppt

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1、WordstudyWorkingtheland1.Findthewordorphrasefromthetextforeachofthesemeanings.Discoveringusefulwordsandexpressionsbrown(skin)fromspendingtoomuchtimeinthesuntomakesomethingorsomebodyfreeoftobecomelargerinsize,numberoramountsunburntrid…ofexpand4.tomakeinformationandideasknowntom

2、anypeople5.wouldpreferto6.totryextremelyhardtoachievesomethingcirculatewouldratherstruggle7.tosendthingstoforeigncountriesforsale8.pleasedbyhavingwhatonewantsorneeds9.toprovidewiththingsnecessaryforacertainpurposeexportsatisfiedwithequip10.plantsgrowninlargeamountsbyfarmers11.

3、becauseofcropthanksto1.AccordingtotheWHO’sinformation,about1.8millionpeopleacrosstheworlddieeachyearfromdiseasescausedbyunsafefoodandwater.statistics,globe2.Differentkindsofstrongcorn,anotherhybridgrain,hasbeendevelopedbyscientistsofmanydifferentraces.3.Nothavingenoughfoodlead

4、stopoorhealthand,therefore,sickness.super,nationalitiesHunger,disease5.Withtheopenconditionsintoday’sinternationalbusinessworld,hybridgrainscanbesoldandsentabroadtocountriesaroundtheworld.freedom,exported4.Over56percentofthepeopleinasmallSoutheastAsiancountryareinjobsrelatedto

5、agriculture.Vietnam,occupations3.Completethepassagewiththewordsbelowintheirproperforms.disturbingexpandoutputstrugglebattlesgraincropsdecadeequipInthepast_______,someofthefarmersinthewestofChinahavemetwithsomesuccessinthe_______againstthe__________desert.decadestruggleexpandin

6、g_________withnewscientificfarmingmethods,theyhavebeenabletouselessfarmlandthaninthepast.Their_______of_____andother_______,however,isstillthesame,whichmakesitpossibleforthemtousetheremainingfarmlandforplantingtrees.Theseandotherfarmersarestartingtowinsmall_______inthetreatwar

7、againstthe_________growthofthedesert.Equippedoutputgraincropsbattlesdisturbing