Here are many kinds of vacations. People can go traveling abroad or spend their holidays at the seaside. One kind of vacation is camping. Many Americans enjoy going camping because it is good for them. Each summer millions of Americans drive to the countryside where they find places to camp. There are a lot of national parks in the USA and these national parks mostly stand on the mountains. They are people's favorite camping places. Campers are free from the busy life in the noisy and crowded city. They throw themselves into the arms of Mother Nature. They enjoy the fresh air, lakes and forests in these parks. Hiking, swimming and fishing are the main kinds of exercise. They can see different sorts of animals and plants there. Some campers have trailers which they pull behind their cars to the camping places. Trailers are like small houses on wheels, having many of the things that people use in their homes, such as electricity, hot water, kitchen tools and things like that. But most campers don't have trailers. Tent campers lead a very simple but healthy life. Camping is a pleasant sports activity. After living a while in the open, campers become as fresh as paintings. They feel relaxed. According to the passage, what do many Americans get from camping? A) Health and happiness. B) A strong body. C) Convenience. D) A simple life.
A
(Question)
Knots are the kind of stuff that even myths are made of.In the Greek legend of the Gordian knot, for example, Alexander the Great used his sword to slice through a knot that had failed all previous attempts to unite it. Knots, enjoy a long history of tales and fanciful names such as "Englishman's tie, " "and "cat's paw. " Knots became the subject of serious scientific investigation when in the 1860s the English physicist William Thomson (known today as Lord Kelvin) proposed that atoms were in fact knotted tubes of ether . In order to be able to develop the equivalent of a periodic table of the elements, Thomson had to be able to classify knots -- find out which different knots were possible. This sparked a great interest in the mathematical theory of knots. A mathematical knot looks very much like a familiar knot in a string, only with the string's ends joined. In Thomson's theory, knots could, in principle at least, model atoms of increasing complexity, such as the hydrogen, carbon, and oxygen atoms, respectively. For knots to be truly useful in a mathematical theory, however, mathematicians searched for some precise way of proving that what appeared to be different knots were really different -- the couldn't be transformed one into the other by some simple manipulation . Towards the end of the nineteenth century, the Scottish mathematician Peter Guthrie Tait and the University of Nebraska professor Charles Newton Little published complete tables of knots with up to ten crossings. Unfortunately, by the time that this heroic effort was completed, Kelvin's theory had already been totally discarded as a model for atomic structure. Nevertheless, even without any other application in sight, the mathematical interest in knot theory continued at _ point for its own sake. In fact, mathematical became even more fascinated by knots. The only difference was that, as the British mathematician Sir Michael Atiyah has put it, "the study of knots became a special branch of pure mathematics. " Two major breakthroughs in knot... Which one would be the best title for this passage? A) Mathematicians VS Physicians B) To be or Knot to be C) Knot or Atom D) Knot VS Mathematics
(Answer)
B
Ques: Elderly women who eat foods higher in potassium are less likely to have strokes and die than women who eat less potassium-rich foods, according to new research in the American Heart Association. "Previous studies have shown that potassium consumption may lower blood pressure. But whether potassium intake could prevent stroke or death wasn't clear," said Smoller, professor of the department of population health at Albert Einstein College of Medicine, Bronx, NY. Researchers studied 90,137 women, aged from 50 to 79 for an average 11 years. They looked at how much potassium the women consumed, as well as if they had strokes, including ischemic strokes , or died during the study period. Women in the study were stroke-free at the start and their average dietary potassium intake was 2,611 mg/day. Results of this study are based on potassium from food, not supplements. The researchers found: Women who ate the most potassium were 12 percent less likely to suffer stroke in general and 16 percent less likely to suffer an ischemic stroke than women who ate the least. Women who ate the most potassium were 10 percent less likely to die than those who ate the least. Among women who did not have high blood pressure, those who ate the most potassium had a 27 percent lower ischemic stroke risk and 21 perc ent reduced risk for all stroke types, compared to women who ate the least potassium in their daily diets. Among women with high blood pressure, those who ate the most potassium had a lower risk of death, but potassium intake did not lower their stroke risk. "Our findings suggest that women need to eat more p otassium-rich foods. You won't find high potassium in junk food. Some foods rich in potassium include white and sweet potatoes, bananas and white beans." The U.S. Department of Agriculture recommends that women eat at least 4,700 mg of potassium daily. "Only 2.8 percent of women in our study met or went beyond this level. The World Health Organization's daily potassium recommendation for women is lower, at 3,510... The author's purpose for writing this passage is to _ . A) present a report on a new research B) show the importance of a good life style C) give information about a chemical element D) encourage elderly women to take potassium
Ans: A
It takes Te'Anne Collins more than an hour to get to school by bus. But for her, it is worth it. Te'Anne is one of many talented students who will attend an interview for a musical theatre program at Wexford Collegiate School for the Arts. "She is someone with unbelievable talent, " says her music teacher, Ann Merriam . "Te'Anne works two jobs, so she can support her studies and living expense." Te'Anne has come a long way since she first came to Wexford collegiate in 9thgrade. She was new to the school and started going out with the wrong crowd. Her negative lifestyle and attitude caused her scores to decline steadily. It was Ann Merriam who pulled her aside. "She told me that she didn't even know who I was and that she often heard bad things about me, " says Te'Anne. "When I think about it now, I deserved it." Now in Grade 12, Te'Anne has fought her way to the front of the stage and has earned her place as an important member of Wexford Gleeks -- a club that Ann Merriam has been running for over 20 years. Ann Merriam is the founder of the famous musical theatre program, which has been attracting audiences for years. A bit of a maverick ,she quietly started the program in the 80's on a shoestring budget, despite an important leader's disagreement at the beginning. Wexford Gleeks is now one of the top competitors at the 2013 Show Choir Canada competition. Te'Anne's story began to spread and soon telephone calls came flooding in the school board from kids' parents, because they knew Ann Merriam never gave up on any student. When Te'Anne was in Grade 9, she _ . A) made a good friendship with her teachers. B) worked two jobs to support her school fees. C) attended an interview for a musical program. D) behaved badly and associated with the wrong crowd.
D