2. 外语
  3. In addition to visible trade, which involves the import and export of merchandise, there is also【S1】______trade, which involves

In addition to visible trade, which involves the import and export of merchandise, there is also【S1】______trade, which involves

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问题     In addition to visible trade, which involves the import and export of merchandise, there is also【S1】______trade, which involves the exchange of services between nations.
    As an example of invisible trade, Brazilian coffee is usually【S2】______by ocean vessels because these steamships are the cheapest method of transportation. Nations such as Greece and Norway and Hong Kong have large maritime fleets, which can【S3】______this transportation service. When an exporter arranges for this kind of transportation, he rents space in the cargo compartment of a ship for one voyage.
    The wise exporter purchases insurance for his cargo’s voyage. While at sea, a cargo is liable to many dangers, the most obvious being that the ship may【S4】______. In this event, the exporter which has purchased insurance is reimbursed. Otherwise, he may suffer a complete loss. There is also the【S5】______of damage to the cargo from a collapsed or leaky pipe, which could reduce the cargo’s【S6】______. Thus, insurance is another service in which some nations specialize. Great Britain, because of the development of Lloyd’s of London, is a leading exporter of this service, earning fees for【S7】______other nations’ foreign trade.
    Some nations posses little in the way of exportable commodities or manufactured goods, but they have a mild and sunny climate. During the winter, the Bahamas attract large numbers of【S8】______, particularly from the northeastern United States, who spend money on hotel accommodation, meals, taxis, and so on. Tourism, therefore, is another form of invisible trade.
    In the past twenty-five years, a tremendous【S9】______has grown for the construction of large-scale development projects around the world, including dams, highway networks, and so on. The technical skills to build these projects are【S10】______when a nation hires engineers and construction supervisors, usually from another country. The commissions and salaries that are paid to these people represent another form of invisible trade.
A) danger B) ensuring C) value D) commodities
E) invisible F) purchased G) demand H) tourists
I) visible J) transported K) disappear L) sink
M) provide N) insuring O) production
【S10】
选项
答案F
解析 根据语法结构，be动词后面可跟名词或动名词，或是过去分词构成被动结构，再根据题意，只有purchased最符合题意。本句意为：通常当一个国家雇佣来自他国的工程师或是项目监理来建设这些项目时，这些技术也成了可以买卖的商品。
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大学英语四级

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