Article: Norman Cousins was a businessman from the United States who often traveled around the world on business. He enjoyed his work and traveling. Then, after returning to the United States from a busy and tiring trip to the Union of Soviet Socialist Republics( USSR),Mr. Cousins got sick. Because he had pushed his body to the limit of its strength on the trip, a chemical change began to take place inside him. The material between his bones became weak. In less than one week after his return, he could not stand. Every move that he made was painful. He was not able to sleep at night. The doctore told him that they did not know how to cure Mr. Cousins ' problem and he might never get over the illness. Mr. Cousins, however, refused to give up hope. Mr. Cousins thought that unhappy thoughts were causing bad chemical changes in his body. He did not want to take medicine to cure himself. Instead,he felt that happy thoughts or laughter might cure his illness. .' He began to experiment on himself while still in hospital by watching funny shows on television. Mr. Cousins quickly found that 10 minutes of real laughter during the day gave him two hours of pain -free sleep at night. Deciding that the doctors could not help him, Mr. Cousins left the hospital and checked into a hotel room where he could continue his experiments with laughter. For eight days,Mr. Cousins rested in the hotel room watching funny shows on television,reading funny books,and sleeping whenever he felt tired. Within three weeks,he felt well enough to take a vacation to Puerto . Rico where he began running on the beach for exercise. After a few months,Mr. Cousins returned to work. He has laughed himself back to health. Question: Why did Norman Cousins get sick? Yes or no, is the answer "All of the above."?
No

Article: Ants have a reputation for strength,organization and teamwork.But researchers have now discovered that a key secret to the success of ants is their ability to identify the importance of age in the work place. A study of Gentral American leaf-cutter ants has shown that the younger and stronger members are give the toughest job of cutting therough the leaves they harvest.Their sharp youn teeth do this job effectively,but as they get older their teeth become relatively worn and _ . But rather than being retired or abandoned by the group,the ageing ants are given a new role more suyted to their physical abilities.They become carriers and teansport the leaves back to the kingdom where they are harvested for food. The findings by researchers from the University of Oregon and the Oregong State University support previous research showin the survival of a leaf-cutter kingdom depends on the efficiency of is workers. "Cuting leaves is hard work,"said Dr.Robert Schofield,who led the research team."Much of the cutting is done with a V-shaped blade between teeth on their jaws.This blade starts out as sharp as the sharpest razor blade that humans have developed."But over rime the teeth become blunter and the cutting job slows down.The team estimated that,because of this age-related wear,a colony spent twice the energy cutting leaves than it would if all the ants had sharp blades.Its findings support the idea that wear and break can be significant problems for insects as well as largre animals. Like humans,leaf-cuttre ant recognize that older members of the group can still make a worhwhile contribution to society."This study shows an advantage of social living that we are familiar with,"said Dr.Schofield. Question: The younger and stronger ants do the toughest job because _ . Yes or no, is the answer "they have a sharp blade to cut leaves"?
Yes

Q: Article: Not everyone goes to university after high school graduation. Some work, others join the army and an increasing number worldwide are taking a "gap year" to travel or do community service in their own countries or abroad. They are studying sharks off the Australian coast, building schools in Mexico and learning Spanish or Italian. The concept of a gap year may not be new, but the recent surge of interest certainly is. Some students are putting off admissions. Others, who don't get into the college of their choice, are taking a year to explore new frontiers before reapplying. Students are choosing to take a breather; they are thinking. They are not sure what they are going to do. They are going and exploring some of their interests. They are getting experience they can take to the school they finally go to. It is an idea actively encouraged by colleges. Princeton University has just launched a "bridge year" program that will send 10 percent of its incoming class to do volunteer work abroad, starting in 2009. And the Harvard has spent the last 30 years urging incoming students to take a gap year. "Many speak of their year away as a 'life-changing' experience or a 'turning point'" says Harvard admissions director Marlin Lewis. "Many come to college with new opinions about their academic plans, their extracurricular interests and the career possibilities they observed in their year away." Question: From the passage we know that _ . Yes or no, is the answer "more and more students will take a gap year"?
A: No

*Question*
Article: Children today spend less time outdoors than ever before and it may be harmful not only to their physical health, but also to their cognitive development. A year-long study, recently published in the Sciences, found that elementary school children who were exposed to more green space within or directly outside their school showed improved learning and memory. The findings reinforce that of a recent six-year study on 905 Massachusetts public elementary schools, which found that students in schools that had more "greenness" in their surroundings reported higher scores on standardized testing in English and math. "There is an expanding body of scientific evidence linking the human experience in the natural world to better physical and mental health and improved cognitive abilities," journalist Richard Louv, co-founder of the Children & Nature Network, said in an email to The Huffington Post. "An increasing number of homeschoolers, nature preschools, independent primary and secondary schools, and forward-thinking public schools are incorporating nature experience into learning." The new study was conducted on more than 2,500 children in second, third and fourth grade at 36 primary schools in Barcelona, Spain. Researchers found that the students who attended schools with more green space showed a 5 percent improvement in the short-term memory that's critical for reasoning, learning and comprehension. But their inattentiveness decreased slightly. Spending time outside could have a number of benefits for children beyond improved memory and attention. Another recent study found that adventurous outdoor play such as climbing, rough and tumble play, and exploring alone improves children's physical health while also help them develop creativity and social skills greatly. Some schools are starting to take notice, creating more space for children to enjoy being in nature, including community gardens, outdoor playgrounds and small parks. Question: Spending time in green space may have little effect on children's _ . Yes or no, is the answer "inattentiveness"?
**Answer**
No