新GRE逻辑阅读练习题
规律要点在解GRE阅读是是关键，所以大家要多写一些新GRE规律阅读练习题，快来一起学习吧，下面我就和大家共享，来观赏一下吧。
新GRE规律阅读练习题
The determination of the sources of copper ore used in the manufacture of copper and bronze artifacts of Bronze Age civilizations would add greatly to our knowledge of cultural contacts and trade in that era. Researchers have 5 analyzed artifacts and ores for their concentrations of elements, but for a variety of reasons, these studies have generally failed to provide evidence of the sources of the copper used ...