题目

一带负电绝缘金属小球放在潮湿的空气中，经过一段时间后，发现该小球上的电荷几乎不存在了，这说明(  ) A．小球上原有的负电荷逐渐消失了 B．在此现象中，电荷不守恒 C．小球上负电荷减少的主要原因是潮湿的空气将电子导走了 D．该现象是由于电子的转移引起，仍然遵循电荷守恒定律 答案：CD 阅读理解 　　Most American students have said goodbye to fancy(高级的)fruits these days．In school canteens across the country, cheaper fruits like apples and oranges have taken their places． 　　“People are afraid to spend now,” said Linda Morrow, who owns a shoe and handbag store．“They don't know what the future will bring．” 　　During the financial crisis(金融危机), several of the country's biggest banks have been forced to sell or close．This has made lots of Americans afraid to buy expensive goods． 　　Samira Marino, a restaurant owner in Miami, has found everyone is ordering water instead of juice and more people are sharing meals．In more than two dozen interviews with The Associated Press across the country last month, Americans talked about their concerns, from worries about small businesses to doubts about simply making ends meet． 　　The crisis began last year．Experts think it was because US banks lend money too easily．Last year a lot of people and companies, who borrowed money, have found themselves unable to pay it back．This left the banks, as well as the people who put their money in the banks, without money．Since the banks borrowed money between themselves and even across borders(国界), the whole world was in trouble． 　　This month the US government agreed on a ＄700 billion plan to try to save the financial market．But no one is sure whether it will help or not．President George W．Bush has warned it will take some time． 　　Last week top finance officials from 20 countries promised to work together to find a way out of the money trouble． (1) Why are people in the US afraid to spend? [　　] A． Because they think it's unnecessary． B． Because they don't have the habit of spending money． C． Because they worry about their future． D． Because they don't have enough money． (2) The fifth paragraph mainly ________． [　　] A． tells what it is like in a crisis B． explains why there is a crisis C． warns people of the danger of the crisis D． asks people not to borrow money from banks (3) People feel ________ about the US plan to save the market． [　　] A． satisfied B． doubtful C． hopeless D． angry (4) The best title for the story is ________． [　　] A． Ways to make ends meet B． The money problem facing the world C． Healthy fancy fruits D． The art of borrowing