参考答案和参考译文见第二页Archaeology as a profession faces two major problems. First, it is the poorest of the poor. Only paltry sums are available for excavating and even less is available for publishing the res
参考答案和译文见第二页Between the eighth and eleventh centuries A. D., the Byzantine Empire staged an almost unparalleled economic and cultural revival, a recovery that is all the more striking because it follow
参考译文见第二页The fossil remains of the first flying vertebrates, the pterosaurs, have intrigued paleontologists for more than two centuries. How such large creatures, which weighed in some cases as much as
参考译文见第二页Recent years have brought minority-owned businesses in the United States unprecedented opportunities — as well as new and significant risks. Civil rights activists have long argued that one of
It looked like a typical business meeting. Six men, neatly dressed in white shirts and ties filed into the boardroom of a small Jakarta company and sat down at a long table. But instead of consulting
答案和解析见第二页Science is a dominant theme in our culture. Since it touches almost every facet of our life, educated people need at least some acquaintance with its structure and operation. They should also
答案和解析见第二页Until about five years ago, the very idea that peptide hormones might be made anywhere in the brain besides the hypothalamus was astounding. Peptide hormones, scientists thought, were made by
答案和解析见第二页Flatfish, such as the flounder, are among the few vertebrates that lack approximate bilateral symmetry (symmetry in which structures to the left and right of the body’s midline are mirror ima
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81.Amid the recriminations and broken treaties after the failure of the European Union’s biggest economic project, wild currency swings between those in the core and those in the periphery would almos