PartIVTranslation：
Almost30millionAmericansweightatleast20percentmorethantheiridealweight.Infact,theUnitedStateisthemostoverweightcountryinthewild.(PassageThree)
几乎三千万美国人的体重比他们理想的体重至少重百分之二十。事实上，美国是世界上最超重的国家。
暂无解析
PartIVTranslation：
I’mnotagainstusingbigwords,whenitisrighttodoso,butIhavealsolearnedthatasmallwordcanworkasmallmiracle—ifit’srightword,intherightplace,attherighttime.(PassageFour)
Whattheyare____aboutiswhichcomesfirst:thechickenortheegg?
PartIVTranslation
Asthesourceofaluminumisalmostinexhaustible,wecanexpectthatmoreandmoreuseswillbefoundforthisversatilemetal.(PassageTwo)
I ’m worried about the appearance of the floor. I need to _____ it.