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M7U4 Public transport Period 2 Reading: The first underground in the world Part I The Preview Sheet熟读并背诵下列句型，注意句中加粗部分。1． Welcome to the London underground, or as it is known, The Tube.L12． As better ways of digging tunnels were developed, the first railway tunnel under the River Thames was dug in 1884. L263． Travelling on these lines was not convenient, though, as each line was possessed by a different company, and many were very far from each other.L314． The London underground system is working to transport huge number of people as it has done for many years.L555． Passengers were transported in carriages without windows, which were pulled through the narrow tunnels by steam engines.L176． The last line (that was) added was the Jubilee Line, which was opened in 1979 in honour of the twenty-fifth anniversary of Elizabeth II becoming the queen. L527． Why not take a trip on the oldest underground system today?L598． Having seen the situation, a wealthy American businessman, Charles Yerkes, undertook improving the system in 1902 by obtaining ownership of the many different lines and setting up the Underground Electric Railways Company of London.L339． Unfortunately, the number of vehicles on the road caused unbelievable traffic jams, and the roads became so busy that no one could travel anywhere.L710．Because of the smoke from the steam engines, early underground lines needs large holes leading to the surface at regular internals, so that people could get fresh air and would not choke.L23背诵并默写下列短语：11.pick up 搭载人；拾起；恢复；（偶然）发现，得到；接收2.drop off 下车；（数量）减低，逐渐消失3.means of transport 交通工具4.have the distinction of 享有。。。的盛名5.cause traffic jams 导致...