Q: I'm taking a test and have to guess the right answer to the question after the article. Article: If doctors want to test you for something, they'll usually take a blood or urine sample  . But wouldn't it be much more convenient if they just asked you to breathe through a special instrument? In fact, your breath can say a lot about you. In traditional Chinese medicine, doctors draw a conclusion about the health state of a patient based on the smell of his or her breath; trained dogs and rats can identify the smells of the breaths of people suffering from certain cancers; traffic police also monitor drivers' alcohol consumption by testing their breaths. Just like blood and urine, your breath contains lots of " metabolites " --- the waste chemicals that the body produces, which vary from person to person. They are like personal health fingerprints, which is why scientists sometimes call them " breath prints", according to Science Daily. Compared to blood or urine testing, breath testing takes only seconds instead of hours, and it requires neither a needle nor a container to hold the body fluids  . This means the test can be taken frequently to better detect early signs of diseases and monitor the progress of a medical treatment. On the other hand, as an identifier, you might think that breaths are not as reliable as fingerprints since they might change based on what you eat. However, researchers in Zurich, Switzerland mapped 11 healthy volunteers' chemical patterns by having them breathe through a special instrument, and they found that each pattern was unique and the patterns didn't change much throughout the day, reported BBC. "Our goal is to develop breath analysis to the point where it becomes competitive with the established analysis of blood and urine," said Malcolm Kohler, professor at the University Hospital Zurich. Question: In comparison with blood or urine testing, breath testing is   _  . Options: A: comfortable and convincing B: traditional and reliable C: accurate and competitive D: quick and convenient
A: D


Q: I'm taking a test and have to guess the right answer to the question after the article. Article: Poor Oral Health Leads to Social and Emotional Problems A new report says nearly four-billion people have major tooth decay, or cavities. That number represents more than half of the world's population. Health officials are warning that failure to repair cavities can lead to social and emotional problems. Wagner Marcenes is with the Institute of Dentistry at Queen Mary, University of London. He led a team of researchers as part of the Global Burden of Disease 2010 study. About 500 researchers attempt to collect and examine studies about all major diseases. They used the information to estimate rates of the infection. The report says untreated tooth decay is the most common of all 291 major diseases and injuries. Professor Marcenes says cavities or holes  in permanent teeth are also known as caries. "Caries is a chronic disease that shares the same risk factors as cancer, cardiovascular disease. What we're having now is an increase in disease from highly developed countries happening in sub-Saharan Africa and probably it will be in other areas of Africa, too." He says an increase in tooth decay in Africa could be a result of developing countries becoming more like Western nations. "It is likely to be related to a change in diet. Our industrialized diet leads to chronic disease, which includes caries. And that may be the main explanation." Western diets are rich in sugar, a leading cause of health problems in the mouth. Wagner Marcenes says oral health problems can have a major effect on a person's quality of life. First, cavities make eating difficult. Second, people may change what they eat. They may eat softer foods that are not hard to chew. However, softer foods are often fattier foods. But professor Marcenes says the biggest issue in tooth decay is both social and mental. He says the researchers found strong evidence that the mouth has a big influence on socialization. He says many people want to hide bad teeth. They smile less and communicate less. Wagner Marcenes is calling for an "urgent, organized,... Question: Caries is a disease that   _  . Options: A: is listed in the most common of all 291 major diseases and injuries which will last for a long time.. B: is closely related to industrialized diet which calls for people to eat slowly. C: increases in Africa now because developing countries are becoming developed countries. D: will cause phychological disorder which will affect people's communication.
A: D


Q: I'm taking a test and have to guess the right answer to the question after the article. Article: While the rest of his family was happily feasting during Spring Festival, Zu Xinming, a Senior 2 student in Shaanxi province, was frowning. "Every time my  s leave after dinner, almost half of the dishes are unfinished," he said, and we throw away a lot of food. Nowadays in China, food waste is a widespread problem. Each year, Chinese people throw away the equivalent   of about 50 million tons of grain, an amount which could feed 200 million people, according to Xinhua News Agency.    One reason is that people are unaware of the issue.    "Some of my friends don't care at all when they can't finish the food on their plates," said Zu, "and they even throw it away if they don't like the taste."    Gong Tao, an official from the Communist Youth League of China Committee of Central South University in Hunan province, is worried about the decreasing awareness of food waste on his campus in recent years.    "Students don't know how much hard work others go through in order to provide their food," Gao told China Education Daily.    One deeper factor is the Chinese cultural value of "face". In a Chinese banquet   setting, the host feels great shame when guests' plates are empty. "Serving lots of food is the Chinese way of showing respect to guests and displaying generosity," Yu Changjiang, a sociologist at Peking University, told Xinhua.     Huge public spending on government banquets is also worsening the situation. Government banquets at the taxpayer's expense   have become "a major source of waste", commented People's Daily.    The good news is that people are already beginning to take action. On Jan 16, 10 restaurants with 749 outlets   in Beijing joined an "eating up" campaign promoted by Xu Xiake, deputy director of China Land and Resources News. These restaurants have begun serving half-sized meals and small dishes.    So, how can you help reduce food waste? Discuss with your family regularly about your food preferences and how much you want to eat. Eat all of the food on your plate and in your bowl. And each... Question: According to the passage, which of the following is true? Options: A: The "eating up" campaign was first promoted by 10 restaurants. B: Eat less so there will be less food wasted in the country. C: Students all understand well the hard work in producing food. D: In Chinese culture, people show their welcome by serving lots of food.
