![]() ![]() This answer choice incorrectly modifies "wingspan of 36 feet" with "believed to be.ever seen", illogically implying that a wingspan of 36 feet is believed to have been the largest flying creature the world has ever seen the intended meaning is that the Quetzalcoatlus is believed to have been the largest flying creature the world has ever seen please remember, in a “noun + comma + phrase” construction, the phrase must correctly modify the noun this is one of the most frequently tested concepts on GMAT sentence correction. The simple present tense is used to indicate actions taking place in the current time frame, indicate habitual actions, state universal truths, and convey information that is permanent in nature.Ī: Trap.The present perfect tense (marked by the use of the helping verb “has/have”) is used to describe events that concluded in the past but continue to affect the present."who/whose/whom/which/where", when preceded by a comma, refers to the noun just before the comma.In a “noun + comma + phrase” construction, the phrase must correctly modify the noun this is one of the most frequently tested concepts on GMAT sentence correction.The pronoun “that” is used to refer to a variation of the subject, and the pronoun “it” is used to refer to the exact same subject.Understanding the intended meaning is key to solving this question the intended core meaning of this sentence is that the Quetzalcoatlus had a wingspan of 36 feet and is believed to have been the largest flying creature the world has ever seen.Ĭoncepts tested here: Meaning + Modifiers + Tenses + Pronouns Meaning is crucial to solving this problem: can anybody point out the subtle differences.thankx.Ī huge flying reptile that died out with the dinosaurs some 65 million years ago, the Quetzalcoatlus had a wingspan of 36 feet, believed to be the largest flying creature the world has ever seen. The answer is C.When exactly to use Have been, Had been and had. ![]() ![]() Aerodynamic principles impose a limit on the size a flying animal may reach, and Quetzalcoatlus northropi is close to that limit. (The genus is named after the Aztec god Quetzalcoatl the species, after the manufacturer, Northrop Aircraft Company, of experimental flying-wing planes built in the 1940's.) In life, the Quetzalcoatlus had a wingspan of 36 feet, and it is believed to have been the largest flying creature the world has ever seen -larger by far than any present-day or extinct species of bird. The replica under construction is of a pterosaur named Quetzalcoatlus northropi, whose bones were discovered in Big Bend National Park, in west Texas, in 1972. Those huge flying reptiles, the pterosaurs, died out with the dinosaurs some 64 million years ago, but thanks to space-age advances in aerodynamics, robotics and structural materials, a startlingly lifelike replica of one of the largest of them will take to the sky later this year. THERE was a time long ago when real dragons soared over Texas, their leathery wings casting monster shadows over the drab Cretaceous landscape far below them. ![]()
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