B.more expensive to be built than a bridge C.less expensive to be built than a rail D.more expensive to be built than a rai 13.If they built a Channel tunnel,you would A.neither take a train nor go by car B either take a train or go by car only take a train D.only take a bus 14.It can be concluded that many of London's dockyardsare A.not used B.fully use C.seriously blocked D.opened again 15.Channel link would A.allow sto by fish and chips in Franc C.decrease more trade for London's dockyards D.make London more prosperous again Passage 4(Questions 16-20 are based on the passage) om 4000 Americans who ambition to become physicians are studying for the M.D.s abroad.Many were rejected by U.S.medical schools simply because there was no room.Last year,for example,some 13,000 of 35.000 would-be physicians who applied to U.S.schools were accepted.Of those who were tumed down,well over 600 are trying the foreign route. But gaining admittanceto agood foreign school may be a problem.British medical schools give priority to Britons,and Canac da'swor-rend MeG University School of Medicine takes only a handful of well qualified Americans annually.But several schools do welcome US.medical students---if they can master the local language.More than 500 Americans are enrolled in the Belgian universities at Brussels and Louvain,for example.Some 80attend the Italian University at 175 at Rome co's Autonomous University of Guadalajara numbers 1.300 gringos among its 4.000 students Despite difficulties abroad.many Americans complete their medical educations. and manage to win the respect of their professors and classmates.One second-year student at Louvain has a simple explanation for those successes:"Anyone who comes new la anguage,the school is constant hard and it'sdifficult toget back into the States topractice B. more expensive to be built than a bridge C. less expensive to be built than a rail D. more expensive to be built than a rail 13. If they built a Channel tunnel, you would_______. A. neither take a train nor go by car B. either take a train or go by car C. only take a train D. only take a bus 14. It can be concluded that many of London’s dockyards are _____________. A. not used B. fully used C. seriously blocked D. opened again 15. Channel link would________. A. allow us to by fish and chips in France B. make the journey from Europe to England dangerous but easier and faster C. decrease more trade for London’s dockyards D. make London more prosperous again Passage 4 (Questions 16-20 are based on the passage) Some 4000 Americans who ambition to become physicians are studying for their M. D. s abroad. Many were rejected by U.S. medical schools simply because there was no room. Last year, for example, some 13,000 of 35,000 would-be physicians who applied to U.S. schools were accepted. Of those who were turned down, well over 600 are trying the foreign route. But gaining admittance to a good foreign school may be a problem. British medical schools give priority to Britons , and Canada’s world-renowned McGill University School of Medicine takes only a handful of well qualified Americans annually. But several schools do welcome U.S. medical students---if they can master the local language. More than 500 Americans are enrolled in the Belgian universities at Brussels and Louvain , for example. Some 800 attend the Italian University at Bologna; 175 at Rome. Mexico’s Autonomous University of Guadalajara numbers 1,300 gringos among its 4,000 students. Despite difficulties abroad, many Americans complete their medical educations, and manage to win the respect of their professors and classmates. One second-year student at Louvain has a simple explanation for those successes: “ Anyone who comes here to be motivated. You have to learn a new language, the school is constant hard work, and it’s difficult to get back into the States to practice