Read the following article and select the best answer. Article: For grown-ups,an afternoon snooze is often easier said than done.But many of us have probably experienced just how simple it can be to catch some sleep in a gently rocking hammock .By examining brain waves in sleeping adults,researchers reported in the June 21issue of Current Biology,a Cell Press publication,that they now have evidence to explain why that is. "It is a common belief that rocking causes sleep:we fall asleep in a rocking chair soon and,since ancient times,we cradle our babies to sleep,"said Sophie Schwartz of the University of Geneva."Yet,how this works had remained a mystery.The goal of our study was made up of two parts:to test whether rocking does indeed improve sleep,and to understand how this might work at the brain level." Schwartz,Michel Muhlethaler,and their colleagues Laurence Bayer and Irina Constantinescu asked twelve adult volunteers to nap on a custom-made bed or"experimental hammock"that could either remain still or rock gently.All participants were good sleepers who didn't typically nap and did not suffer from excessive sleepiness during the day.Each participant took two 45-minute afternoon naps,one with the bed still and one with the bed in motion,while their brain activity was monitored. "We observed a faster transition to sleep in each and every subject in the swinging condition,"Muhlethaler said."Surprisingly,we also observed a dramatic boosting of certain types of sleep-related brain waves." More specifically,rocking increased the length of stage N2sleep,a form of non-rapid eye movement sleep that normally occupies about half of a good night's sleep.The rocking bed also had a lasting effect on brain activity,increasing slow brain waves and bursts of activity known as sleep spindles . Schwartz and Muhlethaler say the next step is to find out whether rocking can improve longer periods of sleep and to find out whether it may be useful for the treatment of sleep disorders,such as insomnia . Question: What do Schwartz and Muhlethaler expect to figure out in the next research? - Whether swing can extend sleep time. - Whether swing can cause insomnia. - Whether swing can change brain waves. - Whether swing can benefit memory consolidation.
Whether swing can extend sleep time.

Read the following article and select the best answer. Article: Green tea is believed to have originated in China thousands of years ago, where it was recognized for its health benefits. And scientists continue to probenew uses for it. Some studies suggest it can help protect against cancer. Thanks to the health food craze, green tea sales are currently rising sharply. The Tea Association of the USA reports that green tea sales jumped more than 60 percent in the last decade. And in Canada, government data shows that profits for green tea imports more than quadrupled . Nowadays, green tea seems to be everywhere. In shops, you can buy green tea leaves prepared in a number of ways: fried, powdered or steamed. Despite green tea's healthy reputation, the drink was once considered dangerous. Where did this silly opinion come from? Blame the Victorians, of course, who lived in a period of English history in the 19th century. That's when some of the silliest theories about green tea arose. One 1882 book described strange experiments to show the harm of green tea. Apply some green tea below a frog's stomach, and you could cause paralysis in its legs, the book claimed. And injecting green tea into a dog would cause it to lose control of its legs and tail. The book went so far as to declare that green tea could kill someone. At that time, a green tea panic was sweeping England. Even Charlotte Bronte, a famous English writer, refused to touch the drink, fearing its terrible effects it would have on her nerves. Some of the fear was well reasonable, though. English consumers preferred brighter leaves, over dull olive- color1ed ones. As a result, tea sellers would dye their products, using anything including poisons like "Prussian blue". Even today, mixing green tea with chemicals remains a problem. But those rare instances aren't stopping Westerners from raising their pinky fingers in salute to green tea and all its nutritional advantages. Bottoms up! Question: Charlotte Bronte is mentioned in the passage to show that _ . - green tea had harmful effects - writers disliked green tea - English people feared green tea - the experiments were persuasive
English people feared green tea

Q: Read the following article and select the best answer. Article: Princeton University Location The University is in Princeton, New Jersey. It is an hour's train ride south of New York City and an hour's train ride north of Philadelphia. Students There are 4,600 undergraduates . There are also 1,900 graduate students, but Princeton is unusual among universities in having a student body made up largely of undergraduates. Faculty Princeton has about 700 full-time faculty members . There are another 300 or so part-time and visiting faculty. All faculty members at Princeton are expected to teach and research. Degrees Princeton offers two undergraduate degrees:the bachelor of arts (A. B. ) degree and the bachelor of science in engineering (B. S. E.) degree. Academic Year An academic year runs from September to late May and lasts two terms (fall and spring). A normal course load is four or five courses per term, although many students take extra courses. Residences Princeton provides housing for all undergraduate students. Freshmen and second-year students are required to spend their first two years in one of five colleges. Each college has its own dining hall, common rooms and computer centers. Fees and Expenses (Academic Year 2011-2012) Tuition : $29,910 Room and board: $ 8,387 Other expenses (books, telephone, etc.): $ 3,083 Total: $ 41,380 Question: In Princeton University, an undergraduate will have to pay _ for the Academic Year 2011-2012. - $11,470 - $ 52,850 - $ 41,380 - $ 8, 387
A: $ 41,380

*Question*
Read the following article and select the best answer. Article: John and Bobby joined a wholesale company together just after graduation from college the same year. Both worked very hard. After several years, however, the boss promoted Bobby to the position of manager but John remained an ordinary employee. John couldn't understand it anymore, gave his resignation to the boss and complained that the boss didn't value hardworking workers, but only promoted those who flattered him. The boss knew that John worked very hard for the years. He thought for a moment and said, "Thank you for your criticism , but I have a request. I hope you will do one more thing for our company before you leave. Perhaps you will change your mind and take back your resignation." John agreed. The boss asked him to go and find out anyone selling watermelon in the market. John went and returned soon. He said he had found out a man selling watermelon. The boss asked how much per kg? John shook his head and went back to the market to ask and returned to tell the boss $1.2 per kg. Boss told John to wait a second, and he called Bobby to come to his office. He asked Bobby to go and find anyone selling watermelon in the market. Bobby went, returned and said, "Boss, only one person selling watermelon. $1.2 per kg, and $10 for 10kg. He has 340 melons in all, 58 of which are on the table. Every melon weighs about 2 kg. Bought from the South two days ago, they are fresh and red, good quality." John was very impressed and realized the difference between himself and Bobby. He decided not to resign but to learn from Bobby. My dear friends, chances exist in the daily details. For the same matter, a more successful person sees more and farther so that he can find out an opportunity and catch it to realize his aim. Question: The story shows such an opinion that _ . - a successful person observes and thinks more - a successful person is curious and eager to learn - the main key to success is to know what you want - one's success sometimes is not related to his hard work.
**Answer**
a successful person observes and thinks more