填空题《复合题被拆开情况》 The Internet and mobile phones have transformed our connections to people around the world. This technology has also, however, led to a widening gender gap in poorer countries. For it is la
填空题《复合题被拆开情况》 In the years after World War II , Americans typically assumed the full responsibilities of adulthood by their late teens or early 20s. Most young men had【C1】_________school and were workin
填空题《复合题被拆开情况》 The Internet and mobile phones have transformed our connections to people around the world. This technology has also, however, led to a widening gender gap in poorer countries. For it is la
填空题《复合题被拆开情况》 In the years after World War II , Americans typically assumed the full responsibilities of adulthood by their late teens or early 20s. Most young men had【C1】_________school and were workin
填空题《复合题被拆开情况》 In the years after World War II , Americans typically assumed the full responsibilities of adulthood by their late teens or early 20s. Most young men had【C1】_________school and were workin
填空题《复合题被拆开情况》 In the years after World War II , Americans typically assumed the full responsibilities of adulthood by their late teens or early 20s. Most young men had【C1】_________school and were workin
What are the zebra stripes on the tomato soup cans and potato chip bags? They are special black and white vertical lines. These black and white【C1】______ can be read by an optical scanner, or computer. The "scanner," which【C2】______the lines of code, is a small laser beam of light. When the light ray is broken by the black stripes, the computer "reads" the information about the product. This code is【C3】______the Universal Product Code (UPC). It is designed【C4】______ add speed and efficiency to stores by using computers. It can do this in【C5】______ways. First, it is not necessary for workers to put individual prices on items.【C6】______using UPC, the computer can print out the accurate price of the item. Errors in prices are eliminated, or done【C7】______with. Also, the time spent checking out is reduced.【C8】______gives an itemized receipt to the customer【C9】______all the items, prices, and totals. The store clerk does not need to spend time checking the price on the item and punching it into the cash register. This UPC computerized system will probably save as【C10】______ as 45 percent of the checkout clerk' s time. What do the stripes mean? How does the computer interpret the stripes? The number【C11】______ below the vertical bars identifies the manufacturer and the manufacturer' s item. As many as 10 trillion individual machine-readable numbers can be used with this system. In the example, the 0 on the left side means that it is a grocery item. The【C12】______51000 indicate the manufacturer. In this case it is the Campbell Soup Company. The【C13】______five digits, 00011, mean it is a can of tomato soup. The light rays from the light beam read these lines, and the message is sent directly to the computer. The computer【C14】______ finds the information about this product (price, inventory data) and sends it instantly back to the terminal【C15】______the checkout counter. At the same time, it keeps an inventory for the store manager. Many products have labels with these stripes.
Why does a newborn baby have to spend the first year of his life learning to listen? Why does a newborn baby have to spend the first year of his life learning to listen?
Read the following text(s) and write an essay to 1) summarize the main points of the text(s) , 2) make clear your own viewpoints, and 3) justify your stand. In your essay, make full use of the information provided in the text(s). If you use more than three consecutive words from the text(s), use quotation marks (" "). You should write 160 -200 words on the ANSWER SHEET. However you view credit cards, it's hard to live in the modern world without one. And if you have one, you owe it to yourself to use it properly. Although credit cards are becoming a more acceptable part of the financial scene, they are still regarded with suspicion by many as being a major part of the "live now pay later" syndrome. A-long with hire purchase, rental and leasing schemes, they provide encouragement to spend more money. They can allow you to pile up debts that you have difficulty paying off, they can also let you spend next month' s salary today. Advertising campaigns have, however, promoted a growing realization of the advantages of these small pieces of plastic. They obviate the need to carry large amounts of cash and are always useful in emergencies. All the credit card organizations charge interest on a monthly basis which may work out as high as 25 per cent a year, yet judicious purchasing using a card can mean that you obtain up to seven weeks interest free credit. It is worthwhile shopping around before deciding on a particular credit card. It is necessary to consider the amount of credit granted; interest rates, which may vary slightly; the number and range of outlets, though most cards cover major garages, hotels, restaurants and departments stores, and of course, what happens if your card is lost or stolen. Using a credit card wisely takes discipline and a little self-control. Once you realize your debt is someone else' s profit margin, your approach to your plastic will change. With a bit of discipline and some practical knowledge, you can make your cards work for you, rather than the other way round. As a matter of fact, a credit card can cost nothing or at least help to tide you over a period of financial difficulty.
[A] Some archaeological sites have always been easily observable—for example, the Parthenon in Athens, Greece, the pyramids of Giza in Egypt; and the megaliths of Stonehenge in southern England. But these sites are exceptions to the norm. Most archaeological sites have been located by means of careful searching, while many others have been discovered by accident. Olduvai Gorge, an early hominid site in Tanzania, was found by a butterfly hunter who literally fell into its deep valley in 1911. Thousands of Aztec artifacts came to light during the digging of the Mexico City subway in the 1970s. [B] In another case, American archaeologists Rene Million and George Cowgill spent years systematically mapping the entire city of Teotihuacan in the Valley of Mexico near what is now Mexico City. At its peak around AD 600, this city was one of the largest human settlements in the world. The researchers mapped not only the city' s vast and ornate ceremonial areas, but also hundreds of simpler apartment complexes where common people lived. [C] How do archaeologists know where to find what they are looking for when there is nothing visible on the surface of the ground? Typically, they survey and sample (make test excavations on) large areas of terrain to determine where excavation will yield useful information. Surveys and test samples have also become important for understanding the larger landscapes that contain archaeological sites. [D] Surveys can cover a single large settlement or entire landscapes. In one case, many researchers working around the ancient Maya city of Copan, Honduras, have located hundreds of small rural villages and individual dwellings by using aerial photographs and by making surveys on foot. The resulting settlement maps show how the distribution and density of the rural population around the city changed dramatically between AD 500 and 850, when Copan collapsed. [E] To find their sites, archaeologists today rely heavily on systematic survey methods and a variety of high-technology tools and techniques. Airborne technologies, such as different types of radar and photographic equipment carried by airplanes or spacecraft, allow archaeologists to learn about what lies beneath the ground without digging. Aerial surveys locate general areas of interest or larger buried features, such as ancient buildings or fields. [F] Most archaeological sites, however, are discovered by archaeologists who have set out to look for them. Such searches can take years. British archaeologist Howard Carter knew that the tomb of the Egyptian pharaoh Tutankhamun existed from information found in other sites. Carter sifted through rubble in the Valley of the Kings for seven years before he located the tomb in 1922. In the late 1800s British archaeologist Sir Arthur Evan combed antique dealers' stores in Athens, Greece. He was searching for tiny engraved seals attributed to the ancient Mycenaean culture that dominated Greece from the 1400s to 1200s BC. Evans' s interpretations of these engravings eventually led him to find the Minoan palace at Knossos (Knossos) on the island of Crete, in 1900. [G] Ground surveys allow archaeologists to pinpoint the places where digs will be successful. Most ground surveys involve a lot of walking, looking for surface clues such as small fragments of pottery. They often include a certain amount of digging to test for buried materials at selected points across a landscape. Archaeologists also may locate buried remains by using such technologies as ground radar, magnetic field recording, and metal detectors. Archaeologists commonly use computers to map sites and the landscapes around sites. Two and three dimensional maps are helpful tools in planning excavations, illustrating how sites look, and presenting the results of archaeological research. Order: