Read the 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: Which of the following may be a reason why Yemen is short of water? Options: A: The country has had no rain for a long time. B: The population of Yemen is growing fast. C: The government has failed to reduce farming. D: People can't afford the water from government water trucks.
B

Read the article and select the best answer. Article: Most students try to learn English grammar using grammar textbooks. They study grammar rules and take grammar tests. They use an analytical approach, attempting to memorize, and then apply, a great number of rules. However, research has proved this method inefficient and ineffective. The truth is, the human brain simply cannot consciously remember process and use hundreds of or thousands of grammar rules. Real speech is too fast. Native speakers do not learn grammar in this way, but rather intuitively and unconsciously. They learn in a complete way, not by attempting to memorize individual grammar rules. As a result, native speakers use correct grammar fluently and easily. Fortunately, it is possible for English learners to learn grammar this way. Language teacher Blaine Ray has developed a unique "intuitive" approach to teach English grammar. Her system uses "point of view" stories to teach the patterns of English grammar, allowing students unconsciously to acquire correct grammar without ever studying grammar rules. In this system, the teacher first tells a simple story from one point of view. It may be told about the past, then repeated, but beginning with "since he was a child"; then repeated again, but this time about the future. Listening to these stories allows students intuitively and effortlessly to learn English grammar and makes them be able to use it correctly when they speak. Point of View Stories is a creative new way to study English grammar, and offers hope to millions of frustrated English learners. Question: Why shouldn't the English learners use an analytical approach? Options: A: because the analytical approach can let them learn English grammar effortlessly B: because the analytical approach makes them be able to use English correctly when they speak. C: because the analytical approach can't let them memorize and then apply a great number of rules. D: because Real speech is too fast.
D

Read the article and select the best answer. Article: A portable lung which could help those with breathing problems lead a normal life is being developed by scientists. The Swansea University scientists say it could take many years before the device , the size of a spectacle box , is available . Lung patients , who have seen how it would work , have welcomed the research. Its research suggests that one person in every seven in the UK is affected by lung disease---- this equates to approximately 8 million people. As of 6 March 2009, 217 people were on the waiting list for a lung transplant according to figures by NHS Blood and Transplant . Now scientists in Swansea are developing a portable artificial lung which could transform the lives of patients . Researchers claim that in the long term the device could offer an alternative to lung transplant , giving hope to those who suffer from conditions such as emphysema and cystic fibrosis. The device mimics the function of a lung---by getting oxygen into and carbon dioxide out of the blood stream . Professor Bill Johns came up with the idea after his son died of Cystic Fibrosis . It is important that we make something that will help people , who instead of being confined to a wheelchair with an oxygen bottle , can actually walk around and do things for themselves , he said. Although the research has been welcomed by leading charities , caution has also been voiced over the length of time it will take before a portable lung will become available . "We have to stress that this is several years away from being used , even in a trial stage," said Chris Mulholland , head of the British Lung Foundation. Patient Elizabeth Spence from Swansea has been refused the double lung transplant she needs but remains hopeful that one day the new device could save her . " My body will reject the lungs , so this possibly could be an answer--- another way of getting new lungs without actually having the transplant," she said. Question: What's the author's attitude towards the portable lung ? Options: A: Negative. B: Doubtful. C: Curious. D: Objective.
D