翻译：China may well be the favorite whipping boy of manufacturers in the United States these days. But in the developing world, the country is becoming the trading partner of choice, drawing in airplanes from Brazil, soybeans from Argentina and seafood from Malaysia, boosting economies and leading to new political alliances. The growing appetite of the world ’most s populous nation has made China a new source of income for the developing economies of South America and Asia. “ China ’ s booming imports from developing countries especially of commodities — —are not only helping growth in countries from Brazil to Africa, but are already reshaping international trade relations, ” said Kenneth Rogoff, an economics professor at Harvard University. Developed countries also are sending more goods to Chins, the world -largest economy, with an estimated ’ s sixth $1.334 trillion gross domestic product in 2003, according to the IMF.

句子写作：He is very busy preparing IELTS. He has no time to play.

医源性感染的传播途径有哪些?

句子写作：The piano player began to sing loudly.

写信( 40 points)

Write a letter according to the following situation: the Wenchuan earthquake has made this winter extremely difficult for the victims. Write to tell your friend Smith that you are raising money to buy 200 pieces of cotton-padded clothing and some other necessities for the earthquake victims. Ask him to join the charity and show your appreciations for his help.Don’ t forget to tell him your phone number555-5555for further discussion. Please sign your name as Li Ping. (150-200 words)

名词解释：社会认知

What are the characteristics of good writings?

名词解释：传染源

社会的迅速发展，物质文明和科学技术的不断进步，人们的欲求也不断增加。人际关系日益广泛和复杂，人们心理上产生的间題也越来越多。据世界卫生组织估计，有20%一30%的人有不同程度的心理异常，这是个不容忽视的间题。

请据此回答下列间题：

(1)人际交往的心理障碍主要有哪些? (7 分)

(2)如何有效地消除和调试人际交往中的心理障碍? (3 分)

名词解释：伦理学