新GRE考试阅读逻辑题练习(第七套)_GRE阅读

新GRE考试阅读逻辑题练习(第七套)

　　overestimates the mathematical effect of repeated doublings on population size

　　fails to take into account that people now alive have overlapping sets of ancestors

　　fails to consider that accurate estimation of the number of people alive three thousand years ago might be impossible

　　8. Each of the academic journals Thought and Ergo has a review committee to prevent misattributed quotations from appearing in its published articles. Nevertheless, about ten percent of the quotations in Thought s published articles are misattributed, whereas Ergo contains no misattributions. Ergo s committee is more effective, therefore, than Thought s at finding misattributed quotations.

　　The argument above assumes that

　　most of the articles submitted to Thought for publication contain misattributed quotations

　　there are at least some misattributed quotations in articles submitted to Ergo for publication

　　the members of Ergo s committee are, on the whole, more knowledgeable than are the members of Thought s committee

　　the number of misattributed quotations in a journal is an accurate measure of how carefully that journal is edited

　　the authors who submit articles to Ergo for publication are more thorough in attributing quotations than are the authors who submit articles to Thought

　　9. In the last few decades, grassy wetlands, essential to the nesting and breeding of ducks, geese, swans, and most other species of waterfowl, have been extensively drained and cultivated in southern Canada and the northern United States,Duck populations in North American have plummeted during this time, but populations of swans and geese have been affected less dramatically.