36.被…毁坏be destroyed by

35.在当今时代in recent times

34.沉默地做某事do sth in silence

33.玩得高兴have fun/have a good time/enjoy oneself

32.多于;超过more than

31.听说hear about/of

30.最重要的事件之一

　 one of the most important events

29.在现代美国历史上in modern American history

28.在历史上in history

27.记得做过/去做某事remember doing/to do sth