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《2018 GMAT官方指南》 OG 18

《2018 GMAT官方指南》是GMAC（GMAT考试命题机构）中国大陆单家授权版本，是GMAT考试必备的专业辅导书。《2018 GMAT官方指南》系列总共有3本指南，其中包含15%的全新内容， 在《2018 GMAT官方指南》2018版中更新了130道全新真题，《GMAT文本逻辑推理 》2018版更新了45道全新真题，以及《GMAT定量推理》2018版更新了45道全新真题。

788 The largest of all the planets, not only is Jupiter three times so massive as Saturn, the next larger planet, but also possesses four of the largest satellites, or moons, in our solar system.
789 While many of the dinosaur fossils found recently in northeast China seem to provide evidence of the kinship between dinosaurs and birds, the wealth of enigmatic fossils seem more likely at this stage that they will inflame debates over the origin of birds rather than settle them.
790 Found only in the Western Hemisphere and surviving through extremes of climate, hummingbirds range extends from Alaska to Tierra del Fuego, from sea- level rain forests to the edges of Andean snowfields and ice fields at altitudes of 15000 feet.
791 She was less successful after she had emigrated to New York compared to her native Germany, photographer Lotte Jacobi nevertheless earned a small group of discerning admirers, and her photographs were eventually exhibited in prestigious galleries across the United States.
792 Scientists have recently found evidence that black holes-regions of space in which matter is so concentrated and the pull of gravity so powerful that nothing, not even light, can emerge from them-probably exist at the core of nearly all galaxies and the mass of each black hole is proportional to its host galaxy.
793 The use of lie detectors is based on the assumption that lying produces emotional reactions in an individual that, in turn, create unconscious physiological responses.
794 Australian embryologists have found evidence that suggests that the elephant is descended from an aquatic animal, and its trunk originally evolving as a kind of snorkel.
795 Most efforts to combat such mosquito-borne diseases like malaria and dengue have focused either on the vaccination of humans or on exterminating mosquitoes with pesticides.
796 Among the Tsonga, a Bantu-speaking group of tribes in southeastern Africa, dance teams represent their own chief at the court of each other, providing entertainment in return for food, drink, and lodging .
797 Almost like clones in their similarity to one another, the cheetah species homogeneity makes them especially vulnerable to disease.
798 As sources of electrical power, windmills now account for only about 2,500 megawatts nationwide, but production is almost expected to double by the end of the year, which would provide enough electricity for 1.3 million households.
799 While most of the earliest known ball courts in Mesoamerica date to 900-400 B.C., waterlogged latex balls found at El Manati and representations of ballplayers painted on ceramics found at San Lorenzo attest to the fact that the Mesoamerican ballgame was well established by the mid-thirteenth century B.C.
800 As criminal activity on the Internet becomes more and more sophisticated, not only are thieves able to divert cash from company bank accounts, they can also pilfer valuable information such as business development strategies, ne w product specifications, and contract bidding plans, and sell the data to competitors.
801 Last week local shrimpers held a news conference to take some credit for the resurgence of the rare Kemp's ridley turtle, saying that their compliance with laws requiring that turtle-excluder devices be on shrimp nets protect adult sea turtles.
802 A ruined structure found at Aqaba, Jordan, was probably a church, as indicated in its eastward orientation and by its overall plan, as well as artifacts, such as glass oil-lamp fragments, found at the site.
803 In the major cities of industrialized countries at the end of the nineteenth century, important public places such as theaters, restaurants, shops, and banks had installed electric lighting, but electricity was in less than one percent of homes, where lighting was still provided mainly by candles or gas.
804 By 1999, astronomers had discovered 17 nearby stars that are orbited by planets about the size of Jupiter.
805 Although she was considered among her contemporaries to be the better poet than her husband, later Elizabeth Barrett Browning was overshadowed by his success.
806 In no other historical sighting did Halley's Comet cause such a worldwide sensation as did its return in 1910–1911.
807 Rock samples taken from the remains of an asteroid about twice the size of the 6-mile-wide asteroid that eradicated the dinosaurs has been dated to be 3.47 billion years old and thus is evidence of the earliest known asteroid impact on Earth.

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