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A．In 4 or 5 years.B．In one year.C．In 3 or 4 years.D．In 36 weeks.
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A．besidesB．althoughC．as
在用例建模过程中，若几个用例执行了同样的功能步骤，此时可以把这些公共步骤提取成独立的用例。这种用例称为(41)。在UML用例图上，将用例之间的这种关系标记为(42)。
A．neitherB．eitherC．too
？Read the article below about the relationship between trade and development
？Choose the best word to fill each gap from A, B, C or D.
？For each Question 21-30, mark one letter (A, By C or D) on your Answer Sheet.
There is no question that the relationship between trade and development is one of the central policy issue we face today. We live in a world where 50% of humanity lives on less than $2 a day. We live in a world (21) by massive inequality between nations. It is estimated that about 2 billion extra souls will share our crowded planet within the next 30 years. However, we face a world of incredible (22) and challenges. Trade and trade policy must play their roles as a part of a wider development scenario. And WTO' s efforts to push forward this (23) must be strengthened and coordinated at all levels; national, regional, and (24) .
1980s has witnessed the petroleum impact, debts crisis, prices slump, economic (25) in industrial countries and the climax of new policy for trade protection as well. However, in recent years, foreign trade in those developing countries has been back to the right (26) of remarkable increase, an indispensable force in leading the global economic growth and trade development. The foreign- (27) trade policy of the developing countries further indicate that they are (28) entering the WTO family on a larger scale than ever before, which helps to protect their interests in WTO and take part in the formulation of new rules and (29) of WTO. Since 1990s, many developing countries, especially those East Asian and Latin American countries, have become an important force in the global economic (30) . The fact that their economic capacity is gaining more and more strength leads to a more important role-playing in the WTO system.
(21)
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