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 , Women’s 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
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