求一篇短文填空急
Boysandgirls,wearealwaystoldthatpopulationisthelargestchallenge(挑战）intheworldtoday.Buthaveyou(1)thoughtaboutis?Haveyouthoughtwhatismeans?Haveyouthoughtwhatweshoulddo(2)students?
Somestudentssaythatmorepeoplecando(3)things.Forexample,whendroughts(旱灾)(4),morepeoplecandobetterthanfewerpeoplecan.Otherstudentsthinkthathumanbeingshave(5)oneearth,theyhavetolivewithmanyotherlivingthings.So,wemustkeepthebalance(平衡)ofnathre
Theresourcesontheearthsuchasfood,water,coalandsoonarenotas(6)astheyweretwentyyearsago.Why?Becausetheworld'spopulationisincreasingso(7)Inordertohavebetterlivingconditionsandenvironment,wemustmakeacontributiontoslowingdowntherateofpopulation(8).That'sour(9).Wemusttrytoourbesttomakeeveryonepayattention(10)theproblem.Dosoandwearesurewecandobetter.