如今，美国商人渴望更多地了解中国贸易及投资机会，尤其在中国加入世贸组织以后。

(1)According to China’s fourth national census conducted in 1990, the Han nationality accounts for 92% of the country’s total population, and ethnic minority groups account for 8%.
(2)The Zhujiajiao ancient town is 50 kilometers from downtown Shanghai in Qingpu District in the southwestern suburbs of the city.
(3)Chinese Wushu has aroused interest among foreigners and is taught in many countries throughout the world.
(4)In an era dominated by electronics and telecommunications, we can never emphasize too much the importance of change.
(5)Today, American businessmen are eager to learn more about trade and investment opportunities in China, especially after its accession to the WTO.