31、 根据以下内容回答31-50题：
Tourism has become a very big business．For Spain，Italy and Greece，it is the largest(1)of foreign exchange，and even for Britain，it is the fourth．Faced(2)this huge new income，no government can afford to look down on the business；questions of hotel bath rooms，beach umbrellas and ice-cream sales are now(3)by ministers of tourism with solemn expertise．Before the Second World War the tourist industry was widely regarded as being unmanly and stupid．But(4)has become a new industry，as trade business used to do；in Spain，Italy，Greece and much of Eastern Europe，new road(5)have opened up in the country，first to tourists，and then to industry and locals．
(6)of tourism is a nationalized industry，a key part of national planning．In a west place of Marseilles，the French government is killing mosquitoes and(7)six big vacation places to attract nearlv a million tourists．In Eastern Europe，a whole new seaside(8)has sprung up over the last few years：the governments have greatly(9)when tourists from the West muhiplied from half a million four years(10)to nearly two million last year．
请回答(1)题
A．factor
B．resource
C．source
D．cause


32、 请回答(2)题
A．in front of
B．of
C．with
D．for


33、 请回答(3)题
A．determined
B．discussed
C．argued
D．sold


34、 请回答(4)题
A．agriculture
B．war
C．tourism
D．education


35、 请回答(5)题
A．types
B．styles
C．buildings
D．systems


36、 请回答(6)题
A．Many
B．All
C．None
D．Much


37、 请回答(7)题
A．built
B．building
C．to be built
D．have built


38、 请回答(8)题
A．civilization
B．culture
C．writing
D．book


39、 请回答(9)题
A．suffered
B．lost
C．invested
D．benefited


40、 请回答(10)题
A．since
B．before
C．ago
D．after．