Despitetheproliferationofotherfastermodesoftransportation,therailroadsremainthelargestcarriersofintercityfreightintheUnitedStates.
A、schemes
B、means
C、tracks
D、variables
Theoldladycan'thopeto_____hercoldinafewdays.
A、getover
B、getoff
C、holdback
D、holdup
A、行为失范的人群
B、有特定问题的人群
C、全民参与的人群
D、医院的病人
E、吸毒人员
Peoplewhodonotsleepenoughtendtobecomeirritable.
A、easilyannoyed
B、ill
C、weary
D、stiffandsore
Betweenthetwopartsoftheconcertisaninterval,__________theaudiencecanbuyice-cream.
A、When
B、Where
C、that
D、which