Passage 11Archaeology as a profession faces two major prob-lems. First， it is the poorest of the poor. Only paltrysums are available for excavating an...
Passage 10Caffeine， the stimulant in coffee， has been called the most widely used psychoactive substance on Earth .” Synder， Daly and Bruns ha...
Passage 9 Most economists in the united States seemcaptivated by the spell of the free market. Conse-quently， nothing seems good or normal that doesn...
Passage 8Virtually everything astronomers known about objects outside the solar system is based on the detection of photons-quanta of electromagnetic ...
Passage 7Between the eighth and eleventh centuries A.D.， the Byzantine Empire staged an almost unparalleled economic and cultural revival， a recovery ...
Passage 6In the eighteenth century， Japan‘s feudaloverlords，from the shogun to the humblestsamurai， found themselves under financialstress. In p...
Passage 5How many really suffer as a result of labor mar-ket problems？ This is one of the most critical yetcontentious social policy questions. In man...
Passage 4The fossil remains of the first flying vertebrates， the pterosaurs， have intrigued paleontologists for morethan two centuries. How such large...
Passage 3No very satisfactory account of the mechanismthat caused the formation of the ocean basins hasyet been given. The traditional view supposesth...
Passage 2Woodrow Wilson was referring to the liberalidea of the economic market when he said thatthe free enterprise system is the most efficientecono...