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编码抗菌药物耐药性的是
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Some houses are designed to be smart. Others have smart designs. An example of the second type of house won an Award of Excellence from the American Institute of Architects.Located on the shore of Sullivan’s Island off the coast of South Carolina, the award-winning cube- shaped beach house was built to replace one smashed to pieces by Hurricane Hugo 10 years ago. In September 1989, Hugo struck South Carolina, killing 18 people and damaging or destroying 36000 homes in the state.Before Hugo, many new houses built along South Carolina’s shoreline were poorly constructed, and enforcement of building codes wasn’t strict, according to architect Ray Huff, who created the cleverly-designed beach house. In Hugo’s wake, all new shoreline houses are required to meet stricter, better-enforced codes. The new beach house on Sullivan’s Island should be able to withstand a Category 3 hurricane with peak winds of 179 to 209 kilometers per hour.At first sight, the house on Sullivan’s Island looks anything but hurricane-proof. Its redwood shell makes it resemble "a large party lantern" at night, according to one observer. But looks can be deceiving. The house’s wooden frame is reinforced with long steel rods to give it extra strength.To further protect the house from hurricane damage, Huff raised it 2.7 meters off the ground on timber pilings—long, slender columns of wood anchored deep in the sand. Pilings might appear insecure, but they are strong enough to support the weight of the house. They also elevate the house above storm surges. The pilings allow the surges to run under the house instead of running into it. "These swells of water come ashore at tremendous speeds and cause most of the damage done to beach- front buildings." said Huff.Huff designed the timber pilings to be partially concealed by the house’s ground-to-roof shell. "The shell masks the pilings so that the house doesn’t look like it’s standing with its pant legs pulled up. " said Huff. In the event of a storm surge, the shell should break apart and let the waves rush under the house, the architect explained. The award-winning beach house is quite strong because().
携带编码毒素的基因使无毒的白喉棒状杆菌产生白喉毒素
Large, multinational corporations may be the companies whose ups and downs seize headlines. But to a far greater extent than most Americans realize, the economy’s vitality depends on the fortunes of tiny shops and restaurants, neighborhood services and factories. Small businesses, defined as those with fewer than 100 workers, now employ 60 percent of the workforce and expected to generate half of all new jobs between now and the year 2000. Some 1.2 million small firms have opened their doors over the past 6 years of economic growth, and 1989 will see an additional 200000 entrepreneurs striking off on their own.Too many of these pioneers, however, will blaze ahead unprepared. Idealists will overestimate the clamor(大声的要求) for their products or fail to factor in the competition. Nearly everyone will underestimate, often fatally, the capital that success requires. Midcareer executives, forced by a takeover or a restructuring to quit the corporation and find another way to support themselves, may savor(欣赏) the idea of being their own boss but may forget that entrepreneurs must also, at least for a while, be bookkeepers and receptionists, too. According to Small Business Administration data, 24 of every 100 businesses starting out today are likely to disappear in two years, and 27 more will have shut their doors four years from now. By 1995, more than 60 of those 100 start-ups will have folded. A new study of 3000 small businesses, sponsored by American Express and the National Federation of Independent Business, suggests slightly better odds: three years after start-up, 77 percent of the companies surveyed were still alive. Most credited their success in large part to having picked a business they already were comfortable in. Eighty percent had worked with the same product or service in their last jobs.Thinking through an enterprise before the launch is obviously critical. But many entrepreneurs forget that a firm’s health in its infancy may be little indication of how well it will age. You must tenderly monitor its pulse. In their zeal to expand, small business owners often ignore early warning signs of a stagnant(停滞的) market or of decaying profitability. They hopefully pour more and more into the enterprise, preferring not to acknowledge eroding profit margins that means the market for their ingenious service or product has evaporated, or that they must cut the payroll or vacate their lavish offices. Only when the financial well runs dry do they see the seriousness of the illness, and by then the patient is usually too far gone to save.Frequent checks of your firm’s vital signs will also guide you to a sensible rate of growth. To snatch opportunity, you must spot the signals that it is time to conquer the new markets, add products or perhaps franchise(给予特权) your hot ideas. In a recent research, among 3000 small businesses, there will be().
Directions: You have just come back from Canada and found a music CD in your luggage that you forgot to return to Bob, your landlord there. Write him a letter to 1) make an apology, and 2) suggest a solution. You should write about 100 words on ANSWER SHEET 2. Do not sign your own name at the end of the letter. Use "Li Ming" instead. Do not write the address.
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