(2014·福建名校质量检查)The United Nations is trying to free the world________the threat of war.
A．at B．in
C．by D．from
(2014·东北三省三校一联)Traffic conditions in Beijing________for decades.At first people only complained about jams during rush hours，but today every hour is rush hour.
A．is worsening B．have worsened
C．have been worsening D．worsened
(2014·安徽七校联考)It is difficult for children to change their eating habit later in life.________，parents should encourage healthy eating from an early age.
A．Otherwise B．Therefore
C．Besides D．However
(2014·北京四中3月模考)It is well known that knowledge is________treasure house，but practice is________key to it.
A．a；the B．the；the
C．a；/ D．/；the
(2014·日照模拟)The young man was modest and worked hard，and gradually managed to________his status.
A．take up B．bring up
C．build up D．put up
(2014·安徽六校教育研究会高三联考)If we just bring over products developed for the US market，we will soon be________to just competing on price.
A．made B．intended
C．reduced D．forced
