单选题Which of the following terms is defined in the passage?

单选题Why does the author mention "the University of Indiana campus" in line 10-11

单选题1 David Smith worked primarily in iron, exploring its possibilities more fully than any other sculptor before or since. To Smith, iron spoke of the power, mobility, and vigor of the industrial age. Smith was born in Indiana in 1906, the descendant of a nineteenth- century blacksmith. His iron sculptures flowed naturally out of the mechanized heart of America, a landscape of railroads and factories. As a child, Smith played on trains and around factories, as well as in nature on hills and near creeks. He originally wanted to be a painter, but after seeing photographs of the metal sculpture of Picasso in an art magazine, he began to realize that iron could be handled as directly as paint. 2 Many of Smith's sculptures are "totems" that suggest variations on the human figure. They are not large iron dolls, although several have "heads" or "legs." Still, they forcefully convey posture and gesture. Their message flows from the internal relations of the forms and from the impression of tension, spring, and alertness set up by their position in space. 3 Later in his career, Smith produced two series of sculptures in stainless steel: the Sentinels in the 1950s and the Cubis in the 1960s. He also began placing his sculptures outdoors, in natural light, where the highly reflective stainless steel could bring sunlight and color into the work. In the late afternoon sun, the steel planes of the Cubis reflect a golden color; at other times, they have a blue cast. The mirror-like steel creates an illusion of depth, which responds better to sunshine than it would to the static lighting of a museum.

单选题A children's librarian (often conducts) story hours and other activities(to help)children enjoy (herself) while developing an (interest) in reading and the library's resources.

单选题What aspect of North America does the passage mainly discuss?

单选题What aspect of ants does the passage mainly discuss?

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单选题The word "preserved" in line 8 is closest in meaning to

单选题Stars shine because of _______ produced by the nuclear reactions taking place within them.

单选题The physical universe is governed by law that demand the continuous increase of A B C D entropy or disorder.

单选题Listentopartofaconversationbetweentwostudents.Nowgetreadytoanswerthequestions.Youmayuseyournotestohelpyouanswer.

单选题1 Archaeology is the study of prehistoric and historic cultures through the analysis of material remains. Archaeologists interpret the past from the objects made by past peoples. Often these objects lie buried in the ground, so our image of the archaeologist is of a scientist who is always digging. Archaeological digs include ruins of buildings and monuments, and also objects made by people who often had no written language and therefore no other record of their way of life. Tools, weapons, body ornaments, household furnishings, and items used in religious ceremonies are all examples of artifacts that typically turn up in digs. 2 Like historians, archaeologists establish the sequence of events that occurred in a given place and time period. But unlike historians, they take on a time span of roughly half a million years. Archaeologists try not only to piece together what happened in a particular setting but also to fit these small pieces into a much bigger picture. They aim to document how big changes occurred in the way peoples exploited their environment and one another.

单选题The human skin forms-----against the action of physical, chemical, and bacterial agents on the deeper tissues.

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单选题The word "transition" in line 23 is closest in meaning to

单选题In Connecticut, (hundreds) of houses (dating from) the seventeenth and eighteenth centuries are preserved by more (as) 100 (local or national) historical societies.

单选题According to the passage, each nest has a distinct odor that allows its inhabitants to

单选题Tourism in Chile The biggest problem facing Chile, as it promotes itself as a tourist destination to be reckoned with, is that it is at the end of the earth. It is too far south to be a convenient stop on the way to anywhere else and it is considerably farther than a relatively cheap half-day's flight away from other major tourist markets, such as Mexico. Chile, therefore, is having to fight hard to attract tourists, to convince travelers that it is worth coming halfway round the world to visit. But it is succeeding, not only in existing markets like the USA and Western Europe but in new territories, in particular the Far East. Markets closer to home, however, are not being forgotten. More than 50% of visitors to Chile still come from its nearest neighbor, Argentina, where the cost of living is much higher. Similar to all the other South American countries, Chile sees tourism as a valuable earner of foreign currency, although it has been far more serious than most in promoting its image abroad. Relatively stable politically within the region, it has benefited from the problems suffered in other areas. In Peru, guerrilla warfare in recent years has dealt a heavy blow to the tourist industry and fear of street crime in Brazil has reduced the attraction of Rio de Janeiro as a dream destination for foreigners. More than 150000 people are directly involved in Chile's tourist sector, an industry which earns the country more than U.S. $ 950 million each year. The state-run National Tourism Service, in partnership with a number of private companies, is currently running a world-wide campaign, taking part in trade fairs and international events to attract visitors to Chile. Chile's great strength as a tourist destination is its geographical diversity. From the parched Atacama Desert in the north to the Antarctic snowfields of the south, it is more than 5000 km long. With the Pacific on one side and the Andean mountains on the other, Chile boasts natural attractions. Its beaches are not up to Caribbean standards but resorts such as Vinadel Mar are generally clean and unspoiled and have a high standard of services. But the trump card is the Andes mountain range. There are a number of excellent ski resorts within one hour's drive of the capital, Santiago, and the national parks in the south are home to rare animal and plant species. The parks already attract specialist visitors, including mountaineers, who come to climb the technically difficult peaks, and fishermen, lured by the salmon and trout in the region's rivers. However, infrastructural development in these areas is limited. The ski resorts do not have as many lifts as their European counterparts and part poor quality of roads in the south means that only the most determined travelers see the best of the national parks.(A) [■] Air links between Chile and the rest of the world are, at present, relatively poor.(B) [■] While Chile's two largest airlines have extensive networks within South America, they operate only a small number of routes to the U.S. and Europe while services to Asia are almost non-existent.(C) [■] Internal transport links are being improved and luxury hotels are being built in one of its national parks.(D) [■] Easter Island and Chiles Antarctic Territory are also on the list of areas where the government believes it can create tourist markets. But the rush to open hitherto inaccessible areas to mass tourism is not being welcomed by everyone. Indigenous and environmental groups, including Greenpeace, say that many parts of the Andes will suffer if they become over-developed. There is a genuine fear that areas of Chile will suffer the cultural destruction witnessed in Mexican and European resorts. The policy of opening up Antarctica to tourism is also politically sensitive. Chile already has permanent settlements on the ice and many people see the decision to allow tourists there as a political move, enhancing Santiago's territorial claim over part of Antarctica. The Chilean government has promised to respect the environment as it seeks to bring tourism potential. The government will have to monitor developments closely if it is genuinely concerned in creating a balanced, controlled industry and if the price of an increasingly lucrative tourist market is not going to mean the loss of many of Chile's natural riches.

单选题The fiction writer, (poetry), and critic Edgar Allan Poe is among the (most familiar) of American(writers) and (one of)the most enigmatic.