In 1900, the United States ranked first in the world in the production of ________.
A、coalA
暫無解析
TheToriesweretheforerunnersof________,whichstillbearsthisnicknametoday
ThelargestandsmalleststatesoftheUnitedStatesare________.
AfaultlinerunsthelengthofNewZealand,whichmeansthatitoftenhas________.
WhatisIrelandcalledinIrish?
ThelongestriverinCanadais________.