Averyimportantworldproblem—infactItendtosayitisthemostimportantofallthegreatworldproblemswhichfaceusatpresenttime—istherapidlyincreasingpressureofpopulationonlandandonlandresources.Itisnot

　　Averyimportantworldproblem—infactItendtosayitisthemostimportantofallthegreatworldproblemswhichfaceusatpresenttime—istherapidlyincreasingpressureofpopulationonlandandonlandresources.

　　Itisnotsomuchtheactualpopulationoftheworldbutitsrateofincreasewhichisthemostimportant.Itworksouttobeabout1.6percentnetannualincrease.Intermsofnumbersthismeanssomethinglike40to55millionadditionalpeopleeveryyear.Canadahasapopulationof20millionratherless6months’climbinworldpopulation.Andthereare10millionpeopleinAustralia.Soittakestheworldlessthanthreemonthstoaddtoitselfapopulationapopulationofthatvastcountry. Letuscometoourowncrowdedcountry—EnglandandWales;45—50millionpeople—justaboutayear'ssupply.Bythistimetomorrowandeverydaytherewillbeaddedtotheearthabout120000extrapeople—justaboutthepopulationofthecityofYork.

　　Iamnottalkingaboutbirthrate.Thisisnetincrease. Togiveyousomeideaofbirthratelookatthesecondhandofyourwatch.Everysecondthreebabiesarebornsomewhereintheworld.Anotherbaby!Anotherbaby!Anotherbaby!Youcannotspeakquicklyenoughtokeeppacewiththebirthrate.

　　Thisenormousincreaseofpopulationwillcreateimmenseproblems.By2010A.D.unlesssomethingdesperatehappenstherewillbeasmanyas7000000000peopleonthesurfaceofthisearth!Sothisisaproblemwhichyouaregoingtoseeinyourlifetime.

　　1.Thetopicforthepassageis .

　　A.TheLackofLandResources B.PopulationExplosion

　　C.YourLifetime D.TheBirthrate

　　2.Accordingtotheauthor isthemostimportantforpopulationpressure.

　　A.thenetincreaserate B.thebirthrate

　　C.theenormousamountofworldpopulation D.thepopulationexplosioninAustralia

　　3.ItcanbelearnedfromParagraph2that _.

　　A.inmorethan6monthstotheworldpopulation20millionwillbeadded

　　B.threemonthslatertothepopulationintheworld10millionwillbeadded

　　C.inlessthanthreemonthstotheworldpopulation10millionwillbeadded

　　D.oneyearlaterthepop