71.on show = on display展览
72.be filled with / be full of充满
73. thank to =because of由于
74.some day =one day(将来)某一天 , all day终日, day and night 日日夜夜 , in a day or two一两天内 in the old days从前,旧社会, from day to day (day after day)日复一日 , the day before yesterday前天 , the day after tomorrow后天, Tree Planting Day植树节 , Womens Day 妇女节
75. keep / stop / prevent (from) doing sth.防止(阻止)做某事 , stop to do sth.停下来去做某事 , stop doing sth.停止做某事
76.nice and +adj. = very +adj.很,非常
77. a place (places) of interest 名胜
78.three quarters of the information on the Internet因特网上四分之三的信息 , two thirds of the books三分之二的书
79. credit card信用卡
80. the increasing population增长着的人口