Sunny countries are often poor. A shame, then, that solar power is still quite expensive. Eight19, a British company by Cambridge University, has, however, invented a novel way to _ this. In return for a deposit of around $10 it is supplying poor Kenyan families with a solar cell able to generate 2.5 watts of electricity, a battery that can deliver a three amp current to store this electricity, and a lamp whose bulb is a light-emitting diode . The firm thinks that this system, once the battery is fully charged, is enough to light two small rooms and to power a mobile-phone charger for seven hours. Then, next day, it can be put outside and charged back up again. The trick is that, to be able to use the electricity, the system's keeper must buy a scratch card--for as little as a dollar--on which is printed a reference number. The keeper sends this reference, plus the serial number of the household solar unit, by SMS to Eight19. The company's server will respond automatically with an access code to the unit. Users may consider that they are paying an hourly rate for their electricity. In fact, they are paying off the cost of the unit. After buying around $80 worth of scratch cards--which Eight19 expects would take the average family around 18 months--the user will own it. He will then have the option of continuing to use it for nothing, or of trading it in for a bigger one, perhaps driven by a 10-watt solar cell. In that case, he would go then through the same process again, paying off the additional cost of the upgraded kit at a slightly higher rate. Users would therefore increase their electricity supply steadily and affordably. According to Eight19's figures, this looks like a good deal for customers. The firm believes the average energy-starved Kenyan spends around $10 a month on oil--enough to fuel a couple of smoky lamps--plus $2 on charging his mobile phone in the market-place. Regular users of one of Eight19's basic solar units will spend around half that, before owning it completely. Meanwhile, as the... What should the user do when the electricity in the battery is used up? A) Buy a scratch card. B) Recharge it outside. C) Buy another solar cell. D) Return it to the company.
B
(Question)
English has gained status as a world language. About 1/3 of the world's population has English as its mother tongue. 75% of the world's mail is in English. English is the official language or is widely used in the United Kingdom, Ireland, Australia, New Zealand, India, United Arab Ernirates, Canada, the United States, Panama, Surinam, South Africa, Nigeria, and Kenya. English is the language that is most often studied as a foreign language in the European Union (by 89% of schoolchildren), followed by French (32%), German (l8%), and Spanish (8%). It is also the most studied in China, Japan, and South Korea. Books, magazines, and newspapers are written in English in many countries around the world. English is also the widest used language in science. In 1997, the Science Citation Index reported that 95% of its articles were written in English, but only half of their authors came from English-speaking countries. Why has English become a world language? The British colonized (......) large parts of the world, spreading their language to new areas. The United Kingdom and the United States are both important nations in the world. When doing business with these nations, knowing English is an advantage. As non-English-speaking countries realized that, industry and business hired people who spoke English, or required their workers to attend language courses. English is the international language of technology. With English being so widespread, it can make those who come from English-speaking countries already feel that they don't need to learn a foreign language. This is not good because one learns to understand a culture better if one knows the language, and one may also enjoy reading original books. From this passage we can learn that _ . A) why English has become a world language B) one must study English as a world language C) English has gained status as a world language D) if you don't study English you'll fall behind
(Answer)
C
Ques: The spread of Western eating habits around the world is bad for human health and the environment. These findings come from a new report in the journal Nature. David Tillman, a professor of ecology at the University of Minnesota, America, examined information from 100 countries to identify what people ate and how diet affected health. He noted a movement beginning in the 1960s. He found that as nations industrialized, population increased and earnings rose, more people began to adopt what has been called the Western diet. The Western diet is high in sugar, fat, oil and meat. By eating these foods, people began to get fatter and sicker. David Tillman says overweight people are at greater risk for non-infectious diseases like diabetes and heart disease. Unfortunately when people become industrialized, if they adopt this Western diet, they are going to have these health problems, especially in developing countries in Asia. China is an example where the number of diabetes cases has been jumping from less than one percent to 10 percent of the population as they began to industrialize over a 20-year period. And that is happening all across the world, in Mexico, in Nigeria and so on. And, a diet bad for human beings, is also bad for the environment. As the world's population grows, more forests and tropical areas will become farmland for crops or grasslands for cattle. We are likely to have more greenhouse gas in the future from agriculture than that coming out of all forms of transportation right now. Mr. Tillman calls the link between diet, the environment and human health, "a trilemma": a problem offering a difficult choice. He says one possible settlement is leaving the Western diet behind. David Tilman believes that _ . A) diet, the environment and human health are closely connected B) the Western diet is the only choice as the nation industrializes C) people in tropical areas are more likely to have heart disease D) traditional diets are more balanced than the Western diet
Ans: A
Ques:Growing strawberries in pots *The best way to start growing strawberries is to buy pot-grown strawberry plants m spring:5 plants are plenty for a hanging basket and 10 for the average 13 inch-sized pot. *Plant them immediately in soil-based compost and they will produce a modest crop in their first year.The second year should see a bumper crop,followed by a slightly lower yield the third summer .Then start again with fresh stock . *Careful watering and feeding are essential If you are to harvest a good crop,you must never let the compost dry out, particularly when the fruit is forming and ripening;if you do.most of your crop will drop offe bush almost immediately. *Water well then leave the pots for up to 3 weeks,until they reach the point of drying out be careful not to overwater them during the winter months. Pruning apple trees *A one-year-old tree is known as a "maiden".It has a single stem when purchased.Immediately after planting, cut it back by about half to leave 4 good buds at the base of the stem..This will force growth from the base or the plant during the summer. *In the second year ,prune in winter by cutting all side branches back by about one-third, Make sure each cut is made cleanly just above an outward-facing bud.In the third and fourth years, new side branches will have emerged from the previous year's growth.Cut back all these new side branches by a third, pruning to an outward-facing bud. *By the fifth year the tree should have a well-balanced shape.From then on ,cut back all new branches by one-third in winter.Remove any diseased wood and broken branches, and ensure the centre is open to air circulation A good crop of strawberries mainly depends on _ A) the size of a pot B) the season of harvesting C) the number of plants in a pot D) careful watering and feeding

Ans:
D