【正文】 nstantly heard.The word rotates is closest in meaning to which of following?(A) alternates(B) participates(C) decides(D) meets067. One important line of evidence es from flaking patterns of stone cores used in tool making: implements flaked with a clockwise motion (indicating a righthanded toolmaker) can be distinguished from hose flaked with a counterclockwise rotation (indicating a lefthanded toolmaker) .The word implements is closest in meaning to which of following?(A) tools(B) designs(C) examples(D) pieces068. Even scratches found on fossil human teeth offer clues. Ancient humans are thought to have cut meat into strips by holding it between their teeth and slicing it with stone knives, as do the presentday Inuit.The word clues is closest in meaning to which of following?(A) solutions(B) details(C) damage(D) information069. The variation between the hemispheres corresponds to which side of the body is used to perform specific activities. Such studies, as well as studies of tool use, indicate that rightor leftsided dominance is not exclusive to modern Homo sapiens.The word hemispheres is closest in meaning to which of following?(A) differences(B) sides(C) activities(D) studies070. Plants are subject to attack and infection by a remarkable variety of symbiotic species and have evolved a diverse array of mechanisms designed to frustrate the potential colonists.The phrase subject to is closest in meaning to which of following?(A) susceptible to(B) classified by(C) attractive to(D) strengthened by071. The external surfaces of plants, in addition to being covered by an epidermis and a waxy cuticle, often carry spiky hairs known as trichomes, which either prevent feeding by insects or may even puncture and kill insect larvae.The word puncture is closest in meaning to which of following?(A) pierce(B) pinch(C) surround(D) cover072. Orchids are unique in having the most highly developed of all blossoms, in which the usual male and female reproductive organs are fused in a single structure called the column.The word fused is closest in meaning to which of following?(A) bined(B) hidden(C) fertilized(D) produced073. To lure their pollinators from afar, orchids use appropriately intriguing shapes, colors, and scents. At least 50 different aromatic pounds have been analyzed in the orchid family, each blended to attract one, or at most a few, species of insects or birds.The word lure is closest in meaning to which of following?(A) attract(B) recognize(C) follow(D) help074. Once the right insect has been attracted, some orchids present all sorts of oneway obstacle courses to make sure it does not leave until pollen has been accurately placed or removed.The word placed is closest in meaning to which of following?(A) estimated(B) measured(C) deposited(D) identified075. By such ingenious adaptations to specific pollinators, orchids have avoided the hazards of rampant crossbreeding in the wild, assuring the survival of species as discrete identities. At the same time they have made themselves irresistible to collectors.The word discrete is closest in meaning to which of following?(A) plicated(B) separate(C) inoffensive(D) functional076. The public school system suddenly found itself overtaxed. While the number of schoolchildren rose because of wartime and postwar conditions, these same conditions made the schools even less prepared to cope with the flood.The word overtaxed is closest in meaning to which of following?(A) well prepared(B) plentifully supplied(C) heavily burdened(D) charged too much077. Therefore, in the 195039。s and 196039。s, the baby boom hit an antiquated and inadequate school system. Consequently, the custodial rhetoric of the 193039。s and early 194039。s no longer made sense。 that is, keeping youths aged sixteen and older out of the labor market by keeping them in school could no longer be a high priority for an institution unable to find space and staff to teach younger children aged five to sixteen.The word inadequate is closest in meaning to which of following?(A) deficient(B) expanded(C) innovative(D) specialized078. With the baby boom, the focus of educators and of laymen interested in education inevitably turned toward the lower grades and back to basic academic skills and discipline.The word inevitably is closest in meaning to which of following?(A) unwillingly(B) impartially(C) irrationally(D) unavoidably079. Deeply philosophical historians such as Henry Adams lamented the role that the new frenzy for business was playing in eroding traditional values. A distrust of industry and business continued among writers throughout the rest of the nineteenth century and into the twentieth.The word lamented is closest in meaning to which of following?(A) plained about(B) analyzed(C) explained(D) reflected on080. One thinks of melodramas, boys39。 books, thrillers, romances, and the like rather than novels of the first rank.The phrase first rank is closest in meaning to which of following?(A) largest category(B) highest quality(C) earliest writers(D) most difficult language081. These writers, who can genuinely be said to have created a genre, the railroad novel, are now mostly forgotten, their names having faded from memory.The words faded from in line 21 are closest in meaning to(A) grew in(B) disappeared from(C) remained in(D) developed from082. The engine that became standard on western steamboats was of a different and novel design. It was the work primarily of an unsung hero of American industrial progress, Oliver Evans (17551819) .The word novel is closest in meaning to which of following?(A) fictional(B) intricate(C) innovative(D) powerful083. The selfeducated son of a Delaware farmer, Evans early became obsessed