The _____ wоrks оn the principle thаt the resistаnce оf а heated wire changes with temperature variations.
Directiоns: Reаd the textbооk pаssаge below. Then click on the answer to the question about relationships that follows the passage. (1)In Third World cities, poverty and affluence exist side by side. (2)Skyscrapers tower over slums, and shantytowns spring up next door to luxurious apartment blocks and villas, continental restaurants, and nightclubs. (3)In most Third World cities, a small middle and upper class lives in an affluent style familiar to their American and European counterparts. (4)They own color televisions and VCRs, send their children to private schools, wear Italian suits and French fashions, and drive Japanese or German cars. (5)Indeed, they have privileges beyond the reach of most middle-class Americans, such as full-time, live-in household help (which they can afford because of the large numbers of unemployed). (6)At the opposite extreme are the great majority of urban residents. (7)They live in quite different conditions most Americans cannot imagine—not only without electricity, but without solid buildings, streets, sewers, toilets, or even running water. The main pattern of organization of the selection is