Passage 2
Let me touch on a few areas where progress in the Doha Development Agenda will help poorer countries reap further gains from trade and enhance their potential for sustainable development.
Agriculture is and has always been a fundamental sector for many developing countries. Agriculture is critical to the successful conclusion of the negotiations. Ambitious liberalization in this sector can offer big potential gains for all countries, particularly developing countries. WTO members are committed to comprehensive negotiations aimed at addressing market access, export subsidies and trade distorting domestic support. More than 50 developing countries depend on agriculture for over one-third of their merchandise export earnings. The eventual elimination of trade distorting measures which affect agricultural trade will be a tremendous boost for sustainable development. The World Bank has estimated that phasing out restrictions on agriculture could lead to higher income in developing countries of some US$400 billion by 2015. The gains from this are several times larger than all the debt relief granted to developing countries so far.
Tariff peaks and tariff escalation: after many rounds of trade negotiations, average tariffs on non-agricultural products have been significantly reduced. But relatively high tariffs still remain on some products in which developing countries are competitive and tariffs go up as the level of processing increases. Tariff escalation prevents developing countries from moving away from dependence on a few commodities. Tariff peaks and tariff escalation must be brought down by the negotiations, if developing countries are to be able to meaningfully gain from world merchandise trade.
51.Because developed countries set a limit on tariffs, developing countries are exporting a broader range of competitive commodities.
A、True
B、False
【正确答案】：B
【名师解析】:题目选项51的陈述是："Because developed countries set a limit on tariffs, developing countries are exporting a broader range of competitive commodities." 这个陈述是错误的。
原文中提到，尽管经过多轮贸易谈判后，非农产品的平均关税已显著降低，但一些发展中国家具有竞争力的产品仍然面临相对较高的关税，并且随着产品加工程度的提高，关税也相应增加。这被称为"关税高峰和关税升级"现象，它阻碍了发展中国家从依赖少数商品向多元化出口转型。因此，原文并没有提到发达国家设定关税限额导致发展中国家出口更广泛的竞争商品，而是指出了关税高峰和关税升级的问题需要通过谈判来解决，以便发展中国家能够从世界商品贸易中获得实质性的利益。
因此，正确答案是B. False。
