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为了帮助2012年职称英语考生有效备考职称英语考试，现特别整理了2012年全国职称英语考试理工类完形填空专项练习，希望会对您有所帮助。 Lets Have a Little Cooperation Please Cia Andina do Triconos , a Bolivian joint venture of the U.S. Dresser Industries and local investors, which and based its investment __________ an allocation under the metalworking program, closed its doors after _________ to penetrate the Andean market after more than two years in operation. The prospect of __________ access to the Andean market, plus protection provided by a 55 percent ad valorem common outer tariff on bits sourced from outside the bloc, made the sales outlook seem __________. However, CATSAs monopoly position in Ancom proved specious. __________ the plant went on stream in 1974, the company was never able to export a single drill bit to the Andean market; and its local sales were __________ a state-owned petroleum company. This market was clearly __________, since the operation had been based on exporting the bulk of the plants 200-unit-per-month capacity to the Andean area. CATSA could not penetrate the Ancom market for several reasons: Although Ancom __________ a 55-percent common outer tariff on third-country imports, some Ancom countries had previously __________ LAFTA tariff concessions, which take precedence over the Ancom tariffs. | 
