资料题：The word"drawbacks" in para4 probably means（　）。

The World Trade Organization (WTO), founded on January 1,1995, aims to encourage international trade to flow as freely as possible, making sure trade agreements are respected andthat any disputes can be settled.In the five years since its founding, the WTO has become well known as one of the world's most powerful economic organization, taking its place alongside the World Bank and International Monetary(货币的)Fund.The system of global rules for international trade, however, dates back half a century to1948 when the General Agreement on Tariffs (关税) and Trade (GATT) was formed after World War Ⅱ.As time went by, it became clear that the CATT had two major drawbacks - the limited areas of trade it covered, and the lack of an effective system to settle disputes.After even years of trade talks ending in 1994, the so-called Uruguay Round(乌拉圭多轮贸易谈判)finally gave birth to the WTO, complete with an effective system to settle disputes and new rules covering trade in services and intellectual property (知识产权) .Even after seven years of talks and 22,500 pages of agreements, there were sill problems, especially the difficulty to deal with areas of agriculture and services, which the member nations agreed to revise in2000.The WTO, with its head office in Geneva, has 150 members with 30 more waiting to join.