则下列结论正确的是（）
Othersarguethatsincetheearthhasenduredalongstringoficeagesinthelasttwomilliontothreemillionyears,anywarmingis________tobetemporary.
Theaddressbook________theemailaddressesofyourfriendsorgroupsofcolleagues.
Insomeschoolschildrenwhoprefertoreadbooksratherthan________footballbecomesocialoutcasts(被抛弃者).
Thefloordoesnotlooksobadwhen________(sweep)clean.
