Read the following article and select the best answer. Article: The food we eat seems to have great effects on our health. Although science has made great 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 diet and forty percent of cancer is related to diet as well. Different cultures are subject to 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 and nitrites , commonly used to keep color in meats, and other food additives, caused 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 to cows and chick and because of this, penicillin has been found in the milk of treated cows. Sometimes similar drugs are given to animals not for medicinal purposes, but for financial reasons. The farmers are simply trying to fatten the animals in order to get a higher price on the market. Although the FDA has tried repeatedly to control these, the practices continue. Question: How has science done a bad service to mankind? - Diseases caused by food have been done away with. - It has caused a lack of information about the value of food. - Some harmful materials have been added to our food. - Scientists have made food more expensive to eat.
Some harmful materials have been added to our food.

(Question)
Read the following article and select the best answer. Article: More and more Americans are showing an interest in healthy and locally-produced food. As the interest increases, raising chickens has been gaining popularity in some American cities. "Look, we get three eggs this time." Collecting eggs is a daily pleasure for the Hurst family. Naomi Hurst says her family started to raise chickens in back of their home in Maryland a month ago. "We have wanted to try having backyard chickens for a couple years now. And really just didn't have the time to build my own coop(;) and look out where to buy chickens. And then we met Rent a Coop," said Naomi Hurst. Rent a Coop is a chicken rental business. Tyler Phillips launched the company with a partner 18 months ago. It comes with a mobile coop on wheels, two egg-laying hens, feed, bedding, water bowl, feed bowl, and our 24-hour chicken hotline. You can call with any questions. The price is 185 dollars for four weeks. After the four weeks passed, individuals can extend the rental agreement, return everything or purchase the animals and supplies. Tyler Phillips designs and makes the coops. He says he wants to do as little damage as possible to the environment. "We always try to have as many recycled materials as possible. And I want the coops to be safe for kids. I want the chickens to be comfortable and they have access to the grass while being inside the coop. I want it to be easily movable, light weight," he said. Some cities require people have large pieces of land, if they want to raise farm animals. Others require an agreement with neighbors, limit the number of chickens, or, even ban the birds. Tyler Phillips expects that would change as interest in small poultry coops grows. "I see cities around the D. C. area changing laws almost monthly and different cities will change the law to being prochicken . That is happening all around the United States," he said, He believes that there will be chicken rental businesses in most American cities within five years. Question: Tyler Phillips designed and made the coops _ - based on the environmentally friendly concept - based on the government's supporting policy - to help advertise the organic and local food - to meet his neighbors' need of raising chickens
(Answer)
based on the environmentally friendly concept

Ques: Read the following article and select the best answer. Article: For the most part, schools are designed to produce people who fit into society, not people who set out to change it. However, schools, particularly universities, may not only spread culture; they may add to the cultural heritage. Today American society places a good deal of emphasis on the development of new knowledge, especially in the physical and biological sciences, medicine, and engineering. In recent years, the nation's leading universities have increasingly become research centres. An emphasis on research has led universities to judge professors not by abilities as teachers, but as researchers. Promotions, salary increases, and other benefits have long been dependent on research and publication. However, the most important is no longer publishing. To be successful these days, professors have to bring in money provided by government and private industry. Critics claim that academic success is most likely to come to those who have learned to "ignore" their teaching duties to pursue research activities. Defenders say that even when students themselves are not involved in research projects they benefit from such an emphasis on research. Major research universities like the Massachusetts Institute of Technology have also cooperated with industrial companies to develop technology and products with commercial potential. With university-industry ties continuing to grow, debate has increased about the consequences for basic science, academic openness, the control of information, the direction of research, and the influence on students. Question: According to the passage, which of the following is NOT emphasized by today's American society? - Physical science. - Biological sciences. - Engineering. - Computer science.
Ans: Computer science.

Ques:Read the following article and select the best answer. Article: Wind turbines are efficient sources of cheap energy but also a source of concern as their huge spinning blades frequently kill birds and bats. A new type of wind generator developed in Spain offers a creative solution to that problem. In 2002, Spanish inventor David Yanez saw a short film about the Tacoma Narrows Bridge in the U.S., collapsing in strong wind. It was a vivid example of the powerful vibrations wind can create when it blows past a long pole, such as a car antenna or even a stick of bamboo. It gave him the idea for a new type of wind-energy generator. "The initial philosophy or spirit was to create a generator of dreams that had all the qualities one would want: It should be as cheap as possible, need as little maintenance as possible, the setup as simple as possible," he said. Yanez and his friend Raoul Martin took the idea to an engineering firm, where they were told it would never work. Undiscouraged, they started experimenting on their own in a small wind tunnel they built. Good initial results were repeated by a larger working model called Vortex installed in a nearby field. "What we have is a mast , which is the top piece and acts as a blade," Yanez said. "It's constructed from the same material as a conventional generator, and what it does is it oscillates , transmitting the oscillation to a conventional alternator, which by its own oscillation converts the wind's energy into electric energy." Yanez said the output of the 6-meter-tall generator, and even that of smaller models, was better than expected. The Vortex creates about 30 percent less energy than a comparable bladed wind turbine, but it is lighter and cheaper to build and maintain. It is made mostly of reinforced plastic and has very few moving parts. Also, it does not create noise and--even more important for many environmentalists--it does not present a threat to passing birds. The current prototype works at wind speeds ranging from 1.5 to 7 meters per second. The inventors say the next step is building a 12.5-meter tall... Question: What would be the best title for the passage? - Bladeless wind-power generator is friendly to birds. - Wind turbines are efficient sources of cheap energy. - A new generator will come onto the market by 2017. - Yanez has made a generator for the benefit of people.

Ans:
Bladeless wind-power generator is friendly to birds.