【答案解析】{{B}}Passage 2{{/B}} The Americans believe that borrowing money from others is smart, while lending money to others is foolish. The U.S. government, companies and common people all regard this as a guideline, which renders this resourceful nation the most indebted one in the world. With tomorrow's money, the Americans have undermined today's housing market and aggravated the inflation. The U.S. government, companies and common people always consider the United States as the wealthiest nation in the world, so that they can borrow and spend as much as they want. However, a nation depending upon borrowing is in no way a healthy nation. One can become the owner of a luxury house without spending a cent, and finally a global financial crisis was brought about. It costs a nation its entire credit to plunder property from other nations by paper-currency printing. A smart guy who borrows irresponsibly is too clever to be wise, and this has become one of the facts threatening the U.S. national security.