【正文】 t are cooler in temperature at the bottom where the egg contacts the nesting material. (10) Such nests also act as humidity regulators by allowing rain to drain into the bottom sections of the nest so that the eggs are not in direct contact with the water. As the water that collects in the bottom of the nest evaporates, the water vapor rises and is heated by the incubating bird, which adds significant humidity to the incubation environment (15) In artificial incubation programs, aviculturists remove eggs from the nests of parrots and incubate them under laboratory conditions. Most mercial incubators heat the eggs fairly evenly from top to bottom, thus ignoring the bird39。 and (3) ribbon, a flatfish shape formed by squeezing a small sample between the thumb and index finger. The behavioral characteristics of the soil when molded into each of these shapes, if they can be formed at all, provides the basis for a general textural classification. The behavior of the soil in the hand test is determined by the (15) amount of clay in the sample. Clay particles are highly cohesive, and when dampened, behave as a plastic. Therefore the higher the clay content in a sample, the more refined and durable the shapes into which it can be molded. Another method of determining soil texture involves the use of devices called sediment sieves, screens built with a specified mesh size. When the soil is filtered (20) through a group of sieves, each with a different mesh size, the particles bee grouped in corresponding size categories. Each category can be weighed to make a textural determination. Although sieves work well for silt, sand, and larger particles, they are not appropriate for clay particles. Clay is far too small to sieve accurately。s was that (A) most places required children to attend school (B) the amount of time spent on formal education was limited (C) new regulations were imposed on nontraditional education (D) adults and children studied in the same classes 48. Vacation schools and extracurricular activities are mentioned in lines 1112 to illustrate (A) alternatives to formal education provided by public schools (B) the importance of educational changes (C) activities that peted to attract new immigrants to their programs. (D) the increased impact of public schools on students. 49. According to the passage, earlytwentiethcentury education reformers believed that (A) different groups needed different kinds of education (B) special programs should be set up in frontier munities to modernize them (C) corporations and other anizations damaged educational progress (D) more women should be involved in education and industry 50. The word it in line 24 refers to (A) consumption (B) production (C) homemaking (D) education 2020． 11 150 答案 BCDCD CBABB DAACA DCBCD CADAD BCBBD BADBB ADABB CCDDC BADAC 。s tone may indicate unsureness or fright, confidence or calm. At interpersonal levels, the tone may reflect ideas and (10) feelings over and above the words chosen, or may belie them. Here the conversant39。 environment. (B) Humidity is an important factor in incubating parrots39。2020 年 11 月份托福閱讀真題及答案 Questions 110 As Philadelphia grew from a small town into a city in the first half of the eighteenth century, it became an increasingly important marketing center for a vast and growing agricultural hinterland. Market days saw the crowded city even more crowded, as line fanners from within a radius of 24 or more kilometers brought their sheep, cows, pigs, vegetables, cider, and other products for direct sale to the townspeople. The High Street Market was continuously enlarged throughout the period until 1736, when it reached from Front Street to Third. By 1745 New Market was opened on Second Street between Pine and Cedar. The next year the Callowhill Market began operation. Along with market days, the institution of twiceyearly fairs persisted in Philadelphia even after similar trading days had been discontinued in other colonial cities. The fairs provided a means of bringing handmade goods from outlying places to wouldbe buyers in the city. Linens and stockings from Germantown, for example, were popular items. Auctions were another popular form of occasional trade. Because of the petition, retail merchants opposed these as well as