Ques: Read the article and select the best answer. Article: Mark Ramirez, a senior executive at AOL, could work in the comfortable leather chair, if he wanted. No, thanks. He prefers to stand most of the day at a desk raised above stomach level. "I've got my knees bent. I feel totally alive," he said. "It feels more natural to stand." In the past few years, standing has become the new sitting for 10 percent of AOL employees at the firm's Virginia branch. Part of a standing popularity is among accountants, programmers, telemarketers and other office workers across the nation. GeekDesk, a California firm that sells desks raised by electric motors, says sales will triple this year. Standers give various reasons for taking to their feet: It makes them feel more focused, prevents drowsiness , and makes them feel like a general even if they just push paper. (Former Defense Secretary Donald Rumsfels works standing up. So does novelist Philip Roth.) But unknown to them, a debate is spreading among ergonomics experts and public-health researchers about whether all office workers should be encouraged to stand--to save lives. Doctors point to surprising new research showing higher rates of diabetes, obesity, heart disease and even mortality among people who sit for long stretches. A study earlier this year in theAmerican Journal of Epidemiologyshowed that among 123,000 adults followed over 14 years, those who sat more than six hours a day were at least 18 percent more likely to die during the time period studied than those who sat less than three hours a day. "Every rock we turn over when it comes to sitting is astonishing," said Marc Hamilton, a leading researcher on inactivity physiology at the Pennington Biomedical Research Center in Louisiana. "Sitting is harmful. It's dangerous. We are on the cusp of a major revolution." He calls sitting "the new smoking". Not so fast, other experts say. Standing too much at work will cause more long-term back injuries. Incidences of varicose veins among women will increase. The heart will have to pump more. Hedge, the Cornell... Question: Marc Hamilton said "Every rock we turn over when it comes to sitting is astonishing" to show that _ . Options: A: the result of the study about sitting too long is shocking B: we need to remove many rocks C: we need to smooth away many difficulties D: sitting on a rock is necessary
Ans: A

Ques: Read the article and select the best answer. Article: NANJING -- Another human H7N9 case has been found in east China's Jiangsu Province, the provincial health department confirmed on January 31. The patient, a 75-year-old woman from the provincial capital of Nanjing, is in a critical condition. The case brings the number of infections in the province to eight this year. H7N9 has killed 19 in China this year, and the total number of human infections reached 96 on January 26, according to the Chinese Center for Disease Control and Prevention. With bird flu cases increasing on a daily basis, public concern over people-to-people transmission during Spring Festival is growing. Li Lanjuan, researcher at the Chinese Academy of Engineering and a specialist in H7N9 prevention, said so far there have not been any cases in which one person transmits the flu to another, and the latter transmits the virus to a third person. Her team has identified H7N9 virus mutations this year, but the _ are not large-scale. "Inter-human transmission is very unlikely," said Li, who added that the virus has not evolved to be extensively drug resistant. The National Health and Family Planning Commission said on Wednesday live poultry markets should close if any case of H7N9 avian flu is detected. The southern metropolis of Shenzhen has closed all live poultry markets until February 13 for a thorough cleaning. The city near Hong Kong has reported 14 human H7N9 cases since December 18. Live poultry trading has been halted in Hangzhou, Ningbo and Jinhua cities in Zhejiang, which reported the largest number of human H7N9 cases. China has stepped up research for an H7N9 vaccine in the face of the increasing threat from the virus. Beijing's Snovac Hotech Ltd.,which developed the A/H1N1 and H5N1 vaccines, said in a press release on Wednesday that it has completed preclinical studies of an H7N9 vaccine arid prepared several types for clinical testing. The company has submitted an application to the China Food and Drug Administration to start clinical trials. Question: Which of the following is true about Beijing's Sinovac Biotech Ltd? Options: A: It has cured a number of H7N9 cases. B: It once developed the A/H1N1 and H5N1 vaccines. C: It has finished clinical studies of an H7N9 vaccine. D: It is in charge of China's food and drug sales.
Ans: B

Ques: Read the article and select the best answer. Article: It is often claimed that nuclear energy is something we cannot do without. We live in a consumer society, where there is a huge demand for commercial products of all kinds. Moreover, an increase in industrial production is considered to be one solution to the problem of mass unemployment. Such an increase needs an abundant and cheap energy supply. Many people believe that nuclear energy is endless and economical. There are a number of other advantages in the use of nuclear energy. Firstly, nuclear power, except for accidents, is clean. A further advantage is that a nuclear power station can be run by ly few technical and managing staff. The nuclear power station represents a large step in our scientific research and, whatever the anti-nuclear group says, it is wrong to expect a return to more primitive sources of fuel. However, those who disagree with nuclear energy point out that nuclear power stations bring a direct threat not only to the environment but also to the human race. Furthermore, it is doubtful whether finally nuclear power is a cheap source of energy. There have, for example, been very costly accidents in prefix = st1 /AmericaandRussia. The possibility of increases in the cost of uranium and the cost to ensure its safety could price nuclear power out of the market. In the long run, environmentalists argue, nuclear energy may bring about the destruction of the human race. Thus, if we wish to survive, we cannot afford nuclear energy. Though nuclear energy programmes are expanding, which assumes a continual growth in industrial production and consumer demands. It is doubtful whether this growth will or can continue. Having weighed up the arguments on both sides, it seems there are good economic and environmental reasons for sources of energy other than nuclear power. Question: The function of the last sentence is to_. Options: A: seek help from the public B: change previously expressed thoughts C: reflect the writer's attitude D: show the disadvantages of nuclear power
Ans:
C