篇章結構題組，下列各題請依文意從四個選項中選出最合適者，答案選用不能重複。As historians have extended the scope of their work, they have also equipped themselves with new methodsand tools, the better to practice their craft. No longer do historians merely pore over the same old chronicles anddocuments to ask whether Charles the Fat was at Ingelheim or Lustnau on July 1887. To introduce the evidence ofstatistics, they learn the methods of the computer scientist. 23 , they study economics. 24 , they becomearcheologists, studying fossil remains, fragments of pots, or modern city landscapes. 25 , they draw on theinsights of social psychologists and cultural anthropologists. To deduce marriage patterns or evaluate the effectupon an entire population of wars and plagues, they master the skills of the demographer.
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(A) To interpret the effect of a rise in the cost of living
(B) To explore the phenomena of cave-dwelling or modern urbanization
(C) To understand the motives of the men and women who have acted in the past
(D) To illuminate the lives and thoughts of those who have left few or no written records