Read the following article and select the best answer. Article: Taxes, Taxes and More Taxes Americans often say that there are only two things a person can be sure of in life; death and taxes. Americans do not have a corner on the "death" market, but many people feel that the United States leads the world with the worst taxes. Taxes consist of the money which people pay to support their government. There are generally three levels of government in the United States: federal , state, and city; therefore, there are three types of taxes. Salaried people who earn more than a few thousand dollars must pay a certain percentage of their salaries to the federal government. The percentage varies form person to person. It depends on their salaries. The federal government has a graduated income tax, that is, the percentage of the tax (14 to 70 percent) increases as a person's income increases. With the high cost of taxes people are not very happy on April 15, when the federal taxes are due. The second tax is for the state government: New York, California, North Dakota, or any of the other forty-seven states. Some states have an income tax similar to that of the federal government. Of course, the percentage for the state tax is lower. Other states have a sales tax, which is a percentage charged to any item which you buy in that state. For example, a person might want to buy a packet of cigarettes for twenty-five cents. If there is a sales tax of eight percent in that state, then the cost of the cigarettes is twenty-seven cents. This figure includes the sales tax. Some states use income tax in addition to sales tax to raise their revenues . The state tax laws are various and confusing. The third tax is for the city. This tax comes in two forms: property tax (people who own a home have to pay taxes on it) and excise tax, which is charged on cars in a city. The cities use these funds for education, police and fire departments, public works and municipal buildings. Since Americans pay such high taxes, they often feel that they are working one day each week just to pay their taxes.... Question: Why should the American people usually pay three types of taxes? - There are three levels of government--federal, state and city-to support the United States. - There are three kinds of taxes to pay--graduated income tax, sales tax and property tax.. - They earn different salaries: high, middle, and low. - Tax laws in different states are different.
There are three levels of government--federal, state and city-to support the United States.

Read the following article and select the best answer. Article: When we think about giving help to developing countries, we often think about giving money so that these countries can build schools and hospitals, buy food and medicine, or find clean water supplies. These seem to be the most important basic needs of the people we are trying to help. However, it's far from enough. Ladies and gentlemen, we've got to come up with some better ideas to help them. I was very surprised, then, when I read about a plan to make cheap laptop computers for children in developing countries. A man called Nicholas Negroponte invented a cheap laptop computer, which can run without electricity. He decided to invent this computer after he visited a school in Cambodia. The laptop which Mr. Negroponte has designed is a little different from the normal laptop computers you can buy in the shops. One difference is that it is covered in rubber so that it is very strong and won't be damaged easily. As an electricity supply can be a problem in developing countries, the computer also has a special handle so that children can wind the computer up to give it extra power when needed. These special laptop computers will cost less than 100 US dollars and Mr. Negroponte wants to build as many as 15 million machines in the first year of production. The idea is that these computers will help the children's education as they will be able to access the Internet. These computers might not help the people in developing countries immediately, but by improving children's education they should help people to find their own solutions to their problems in the long term. Another idea to help children in developing countries is to recycle old mobile phones so that they can be used again. In the UK, and, probably in many other countries too, millions of mobile phones are thrown away every year. The waste created by throwing away these old phones is very bad for the environment, so it seems to be an excellent idea to recycle them. In this way we will be able to achieve two important goals at the same time. We will reduce... Question: It's an excellent idea to recycle old mobile phones because _ . - it reduces waste and can help others - it prevents waste and can earn lots of money - it can send the waste produced by developed countries to other countries - it is good for the environment and very educative for phone users
it reduces waste and can help others

*Question*
Read the following article and select the best answer. Article: In Yemen, you always see one type of vehicle on the road: the water truck.They travel mountain roads and cross deserts to bring Yemenis the goods more valuable than oil.It is one that only the rich can afford, with the supply regularly being cut off.Others must rely on scarce rain or charity to fight thirst. Experts say Yemen is going to be the first country in the world to run out of water.The capital, Sanaa, will run out of drinking water as early as 2025,says a report by the World Bank. Hannan, an 18yearold from Lahej, said that only the rich could prepare for cuts in supply."In a good week we'll have a water supply all week but then the following week there will be water only for a day or two, " she said. She and her husband, a factory worker, pay 3,000 riyals (99yuan) for a week's supply of water from a touring water truck when the taps run dry.With an income of only 20,000 riyals (660yuan) a month,this means the family often spend half their money on water. "There are a lot of people who can't afford it and they have to rely on their neighbors to help," she said. The average person in Yemen survives on onefifth of what the World Health Organization considers to be enough water. In Taiz, in the south,tap water is available only once every 45 days.In the mountainous Malhan district in the north,women and children climb a 1,500m mountain to collect water from a spring, often in the small hours to avoid long queues. Yemen is located in Southwest Asia,bordering the Arabian and Red Sea.Yemeni people have lived on scarce water supplies for thousands of years but that problem has been made serious by conflict in the area,the fastgrowing population and the use of water to grow a drug called qat.With one of the world's highest rates of population growth--3.46 percent, Yemen is the poorest Arab country. The government is considering desalinating seawater,but this would be expensive and it may now be too late.The only other solution is to cut down on farming, but that means importing even more food. Question: When Hannan said that only the rich could prepare for cuts in supply,she meant that _ . - rich people drank more water than the poor - rich people could buy water from the water trucks if there was a water supply cut - she had a rich neighbor who often helped her during water supply cuts - the rich were not affected by water supply cuts
**Answer**
rich people could buy water from the water trucks if there was a water supply cut