【正文】 shapes in which they were built D. the positioning of buildings in clusters 13. Look at the four squares [■] that indicate where the following sentence could be added to the passage. Practical and unimpressive, most were barely taller than the average adult. Where would the sentence best fit? Click on a square [■] to add the sentence to the passage.14. Directions: An introductory sentence for a brief summary of the passage is provided the summary by selecting the THREE answer choices that express the most important ideas in the passage. Some sentences do not belong in the summary because they express ideas that are not presented in the passage or are minor ideas in the passage. This question is worth 3 points. The conquest of Britain by the Roman Empire resulted in significant cultural change.lllAnswer ChoicesA. New objects entering Britain ranged from massproduced articles for everyday use to works of art, and they were widelyand enthusiasticallyaccepted by native Britons. B. Constructing and furnishing buildings in the Roman style required skills that native workers did not at first have, so workers were brought in from other parts of the empire. C. Native Britons traveled to Gaul to learn Classical stonecarving and building techniques. D. The conquest was followed by a building boom, and enough villas and temples in the Italian style were built that a visitor from Rome would have felt quite at home in postconquest Britain. E. An important symbol of Roman supremacy was Roman architecture, whose enormous size, emphasized by the use of straight lines, made the natives feel insignificant. F. Characteristically RomanoBritish concepts took hold in architecture。 egg, larva, pupa, and adult. The worker and soldier castes of social ants, bees, and wasps consist of only females, all daughters of a single queen that mated soon after she matured and thereafter never mated again. The worker and soldier castes of termites consist of both males and females, and the queen lives permanently with a male consort. Since termites are small and softbodied, they easily bee desiccated and must live in moist places with a high relative humidity. They do best when the relative humidity in their nest is above 96 percent and the temperature is fairly high, an optimum of about 79176。F for tropical species. Subterranean termites, the destructive species that occurs monly throughout the eastern United States, attain these conditions by nesting in moist soil that is in contact with wood, their only food. The surrounding soil keeps the nest moist and tends to keep the temperature at a more or less favorable level. When it is cold in winter, subterranean termites move to burrows below the frost line.Some tropical termites are more ingenious engineers, constructing huge aboveground nests with builtin “air conditioning” that keeps the nest moist, at a constant temperature, and well supplied with oxygen. Among the most architecturally advanced of these termites is an African species, Macroternes natalensis. Renowned Swiss entomologist Martin Luscher described the mounds of this fungusgrowing species as being as much as 16 feet tall, 16 feet in diameter at their base, and with a cementlike wall of soil mixed with termite saliva that is from 16 to 23 inches thick. The thick and dense wall of the mound insulates the interior microclimate from the variations in humidity and temperature of the outside atmosphere. Several narrow and relatively thinwalled ridges on the outside of the mound extend from near its base almost to its top.According to luscher, a mediumsized nest of Macrotermes has a population of about 2 million individuals. The metabolism of so many termites and of the fungus that they grow in their gardens as food helps keep the interior of the nest warm and supplies some moisture to the air in the nest. The termites saturate the atmosphere of the nest, bringing it to about 100 percent relative humidity, by carrying water up from the soil. But how is this wellinsulated nest ventilated? Its many occupants require over 250 quarts of oxygen (more than 1,200 quarts of air) per day. How can so much oxygen diffuse through the thick walls of the mound? ■ Even the pores in the wall are filled with water, which almost stops the diffusion of gases. ■ The answer lies in the construction of the nest. ■ The interior consists of a large central core in which the fungus is grown, below it is “cellar” of empty space, above it is an “attic” of empty space, and within the ridges on the outer wall of the nest, there are many small tunnels that connect the cellar and the attic. ■ The warm air in the fungus gardens rises through the nest up to the attic. From the attic, the air passes into the tunnels in the ridges and flows back down to the cellar. Gases, mainly oxygen ing in and carbon dioxide going out, easily diffuse into or out of the ridges, since their walls are thin and their surface area is large because they protrude far out from the wall of the mound. Thus air that flows down into the cellar through the ridges is relatively rich in oxygen, and has lost much of its carbon dioxide. It supplies the nest’s inhabitants with fresh oxygen as it rises through the fungusgrowing area back up to the attic. 1. The author mentions “white ants” in the beginning of the passage in order to A. correct a mon misunderstanding about termites’ B. introduce the idea that termites only take the form of ants during certain life stages C. argue that not all white ants are social insects D. Illustrate the large variety of insect species that live in colonies 2. According to paragraph 1, which of th