单选题The phrase "the world" in the first line of the passage refers to A. "man". B. "you". C. "woman". D. "they".

单选题Health experts have tried to get many restaurants to serve smaller portions. Now, apparently, some customers are calling for this too. The restaurant industry trade magazine QSR reported last month that 57 percent of more than 4,000 people surveyed believed restaurants serve portions that are too large;23 percent had no opinion;20 percent disagreed. But a closer look at the survey indicates that many Americans who can't afford fine dining still prefer large portions. Seventy percent of those earning at least $150,000 per year prefer smaller portions ;but only 45 percent of those earning less than $ 25,000 want smaller. What is the average percentage of customers preferring smaller portions according to the report by QSR?A. 57%.B. 70%.C. 45%.D. 20%.

单选题Stem Cell Therapy May Help Repair the Heart According to scientists in the USA, stem cell therapy may one day be able to repair the hearts of people with heart failure. Researchers at Pittsburgh University School of Medicine examined 20 patients who had severe heart failure and were going to have surgery. They injected stem cells into the parts of their hearts that were damaged. They then compared their hearts with those of people who had undergone surgery without having the stem cells injected into them (they had also suffered from severe heart failure). The patients who had the stem cells injected had hearts that were able to pump (用泵抽运) more blood than the others. According to Professor Robert Kormos, one of the researchers, these results could revolutionize heart treatment. Although previous studies had indicated that there might be a benefit, this is the first study that has actually proved that stem cell therapy can help the failing heart work better. All the patients in this study had hearts that could not pump blood properly. The scientists measured their ejection fraction (射血分数). It is a measure of heart performance; you measure how much blood is being pumped out by the left ventricle (心室). Healthy people"s ejection fraction is about 55%. These patients had ejection fraction of under 35%. They all had by-pass surgery (搭桥手术) performed on them. Some of the patients had stem cells taken from their hip bones and injected into 25～30 sites in the damaged heart muscle. Six months later their ejection fraction rate was 46.1% while those who just had surgery but no stem cell injections averaged 37.2%. No side effects were reposed. Heart failure is a common problem all over the world. In the UK alone about 650,000 people suffer from heart failure every year. As the number of people suffering from heart failure increases in the world in general these findings are particularly significant. Current treatments relieve the symptoms. This new stem cell therapy actually repairs the damaged muscle in the heart and has the potential of curing the disease.

单选题The spoils meeting is cancelled due to the heavy rain.A. because ofB. regardless ofC. rather thanD. up to

单选题 Food and Health The food we eat seems to have profound effects on our health. Although science has made enormous steps in making food more fit to eat, it has at the same time, made many foods unfit to eat. Some research has shown that perhaps eighty percent of all human illnesses are related to the diet as well, especially cancer of the colon (结肠). Different cultures are more likely to develop certain illnesses because of the food that is characteristic in these cultures. That food is related to illness is not a new discovery. In 1945, government researchers realized that nitrates (硝酸盐)commonly used to preserve color in meats, and other food additives, accused cancer. Yet, these additives remain in our food, and it becomes more difficult all the time to know which things on the packaging labels of processed food are helpful or harmful. The additives which we eat are not all so direct. Farmers often give penicillin(青霉素) to beef and poultry(家禽),and because of this, penicillin has been found in the milk of treated cows. Sometimes similar drags are administered to animals not for medicinal purposes, hut for financial reasons. The farmers are simply trying to fatten the animals in order to obtain a higher price on the market. Although the Food and Drug Administration(FDA) has tried repeatedly to control these procedures, the practices continue.

单选题Stress Level Tied to Education Level People with less education suffer fewer stressful days, according to a report in the current issue of the Journal of Health and Social Behavior. However, the study also found that when less-educated people did suffer stress it was more severe and had a larger impact on their health. From this, researchers have concluded that the day-to-day factors that cause stress are not random. Where you are in society determines the kinds of problems that you have each day, and how well you will cope with them. The research team interviewed a national sample of 1,031 adults daily for eight days about their stress level and health. People without a high school diploma reported stress on 30 percent of the study days, people with a high school degree reported stress 38 percent of the time, and people with college degrees reported stress 44 percent of the time. "Less advantaged people are less healthy on a daily basis and are more likely to have downward turns in their health." lead researcher Dr. Joseph Grzywacz, of Wake Forest University Baptist Medical Center, said in a prepared statement. "The downward turns in health were connected with daily stressors and the effect of daily stressors on their health is much more devastating for the less advantaged." Grzywacz suggested follow-up research to determine why less-educated people report fewer days of stress when it is known their stress is more acute and chronic. "If something happens every day, maybe it"s not seen as a stressor" Grzywacz says. "Maybe it is just life."

单选题Everyone can tell this poor man's longing for knowledge.A. desireB. lengthC. pursuitD. objective

单选题In judging our work you should take into consideration the fact that we have been very busy recently.

单选题You should soon regain your appetite.

单选题We all think that the new device he has proposed is {{U}}ingenious{{/U}}. A. effective B. clever C. implausible D. original

单选题The room was furnished with the simplest essentials, a bed, a chair, and a table. A. supplied B. gathered C. grasped D. made

单选题Exclusive information is more persuasive than widely known data.

单选题We gave out a cheer when the red roof of the cottage {{U}}came into view{{/U}}.

单选题According to the American Red Cross, blood and plasma donors are {{U}}urgently{{/U}} needed after natural disasters or other catastrophes.

单选题Mother Knows Best? Six years later, in an about-face, the FBI admits that federal agents fired tear gas canisters capable of causing a fire at the Branch Davidian compound near Waco, Texas in 1993. But the official said the firing came several hours before the structure burst into flames, killing 80 people including the Davidians' leader, David Koresh. "In looking into this, we've come across information that shows some canisters that can be deemed pyrotechnic in nature were fired—hours before the fire started," the official said. "Devices were fired at the bunker, not at the main structure where the Davidians were camped out. " The Federal Bureau of Investigation maintains it did not start what turned to be a series of fiery bursts of flames that ended a 51-day standoff between branch members and the federal government. "This doesn't change the bottom line that David Koresh started the fire and the government did not," the official said. "It simple shows that devices that could probably be flammable were used in the early morning hours. " The law enforcement official said the canisters were fired not at the main structure where the Davidian members were camped out but at the nearby underground bunker. They bounced off the bunker's concrete roof and landed in an open field well, the official said. The canisters were fired at around 6 a.m. , and the fire that destroyed the wooden compound started around noon, the official said. The official also added that other tear gas canisters used by agent that day were not flammable or potentially explosive. While Coulson denied the grenades played a role in starting the fire, his statement marked the first time that any U. S. government official has publicly contradicted the government's position that federal agents used nothing on the final day of the siege at Waco that could have sparked the fire that engulfed the compound. The cause of the fiery end is a major focus of an ongoing inquiry by the Texas Rangers into the Waco siege.

单选题 What Is Globalization? It was the anti-globalization movement that really put globalization on the map. As a word it has existed since the 1960s, but the protests against this allegedly new process, which its opponents condemn as a way of ordering people's lives, brought globalization out of the financial and academic worlds and into everyday current affairs. In the late 1980s and early 1990s, the business model called the "globalize" financial market came to be seen as an entity that could have more than just an economic impact on the parts of the world it touched. Globalization came to be seen as more than simply a way of doing business, or running financial markets-it became a process. From then on the word took on a life of its own. So how does the globalize market work? It is modern communications that make it possible; for the British service sector to deal with its customers through a call centre in India, or for a sportswear (运动服) manufacturer to design its products in Europe, make them in southeast Asia and sell them in North America. But this is where the anti-globalization side gets stuck in (关注). If these practices replace domestic economic life with an economy that is heavily influenced or controlled by overseas, then the creation of a globalize economic model and the process of globalization can also be seen as a surrender of power to the corporations, or a means of keeping poorer nations in their place. Not everyone agrees that globalization is necessarily evil, or that globalize corporations are running the lives of individuals or are more powerful than nations. Some say that the spread of globalization, free markets and free trade into the developing world is the best way to beat poverty the only problem is that free markets and free trade do not yet truly exist. Globalization can be seen as a positive, negative or even marginal process. And regardless of whether it works for good or ill, globalization's exact meaning will continue to be the subject of debate among those who oppose, support or simply observe it.

单选题Storms are frequent, here during summer.A. rareB. never stoppedC. terribleD. constant

单选题Travelling and meeting new people widen the mind of young people.

单选题Customers may also be permitted to {{U}}overdraft{{/U}} their current accounts for a short period in anticipation of a credit item coming in. A. overextend B. overdraw C. overvalue D. overpay

单选题I {{U}}reserve{{/U}} the fight to disagree.