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题目： The embedded narrative structure of the Thousand and One Arabian Nights, in which many of the individual tales are stories within stories, nested as many as four layers deep, make mythologists suspect that they were not all written by the same author.

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题目： George Clinton, the governor of New York for many years, served as Vice President under Thomas Jefferson, and again under James Madison, to become only one of two men to serve as Vice-President under two different US Presidents.

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题目： Quintus Horatius Flaccus (65 – 8 BCE), known in the English-speaking world as "Horace", was a contemporary of Virgil and the preeminent lyrical poet of the Augustan age; his poems were known as the "common currency of civilization" because they were so widely read and quoted, and over the past two millennia have had a much greater influence than any poet from ancient Rome.

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题目： When chemist Amedeo Avogadro (1776 – 1856) posited that equal volumes of different gases, at the same temperature and pressure, containing equal numbers of molecules, and many scientists, doubting that, even if this theory were true, the number could ever be measured, but in the early 20th century, Perrin measured the value of "Avogadro's number" by use of several different experimental designs.

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题目： Besides the color of its coat, the most notable characteristic of the snow leopard tends to be its heavily tufted tail, which accounts for 50% of the animal's length and which has two notable functions: it keeps the animal warm-the leopard will wrap the tail around its head-and it can be used to dispatch small prey.

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题目： The success of the first landing on the moon emboldened some scientists to claim that a Mars landing was imminent, vastly underestimating the difficulties entailed in such a feat.

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题目： Einstein's Theory of Relativity says that the fundamental laws of the spacetime continuum prohibit any object having mass to go at a speed as faster than the speed of light.

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题目： Those who fault the intrusion of amateurs into areas requiring serious scholarship often cite as an example Heinrich Schliemann, a wealthy German businessman with an obsession in antiquity, who unwittingly destroyed the very artifacts he had been hoping to unearth, deploying fifteen sticks of dynamite in the substratum containing relics of ancient Troy.

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题目： While the Senate of the Roman Republic did not have the power to enact laws, their decrees generally were obeyed like law, and through them they exercised considerable influence.

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题目： Because of Elnath Industries posting a second consecutive quarter of losses, its stocks tumbled 20% in the last three days.

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题目： In contrast to the high value the Hopi Native Americans placed on retaining their ancestral lands, Nez Perce Native Americans left their lands and fled over 100 miles, fighting the US Army several times along the way, in an unsuccessful bid for freedom.

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题目： The film professor said he regarded Leni Riefenstahl more like a pioneer of cinematographic aesthetics instead of being a Nazi propagandist.

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题目： By the late 1960s, the rising number of American casualties in Vietnam and the 1968 Tet Offensive, the Viet Cong's coordinated surprise attack on American installations throughout the whole of Vietnam, suggested that Vietnam was an ultimately unwinnable situation for the United States.

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题目： Compared to Bach's astonishing output of music each year over his relatively long life, Brahms, ever the perfectionist, destroyed many of his compositions and only published those few that met his high standards.

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题目： At the state beach, deaths due to drowning have increased by 35% this year, not because of fewer lifeguards but because of dramatic changes in ocean currents.