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题目材料：
In Bronze Age farm fields near the ancient circle of stones at Stonehenge, the furrows were found plowed at right angles to an imaginary line to the place where the Sun rises on the shortest day of the year. Some of the major stones at Stonehenge are also aligned, apparently intentionally, with that point on the horizon. Since these fields date from shortly after Stonehenge was completed, the plowing was probably consciously guided according to systematic observation of the Sun's position.
Which of the following, if true, most strengthens the argument?
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A.The landscape in which these fields were situated made it more difficult to plow in the direction in which the furrows were plowed than in other directions.
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B.The direction of the plowing on any other Bronze Age farm fields near Stonehenge cannot be determined because of the deep plowing that has taken place in modern times.
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C.Bronze Age farmers had primitive plows that were not capable of turning over soils heavier than those in the fields near Stonehenge.
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D.The Bronze Age farm fields near Stonehenge were laid out in clusters that were not immediately next to other such clusters.
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E.Even before Stonehenge was built, farmers in the area could have made a practice of observing the Sun's position at various times of year.
A显示答案
