四六級閱讀難點關鍵句200句（四）

 61. Of course, it would be as dangerous to overreact to history by concluding that the majority must now be wrong about expansion as it would be to re-enact the response that greeted the suggestion that the continents had drifted.

    62. While the fact of this consumer revolution is hardly in doubt, three key questions remain: who were the consumers? What were their motives? And what were the effect of the new demand for luxuries?

    63. Although it has been possible to infer from the goods and services actually produced what manufacturers and servicing trades thought their customers wanted, only a study of relevant personal documents written by actual consumers will provide a precise picture of who wanted what.

    64. With respect to their reasons for immigrating, Grassy does not deny their frequently noted fact that some of the immigrants of the 1630’s, most notably the organizers and clergy, advanced religious explanations for departure, but he finds that such explanations usually assumed primacy only in retrospect.

    65. If we take the age-and sex-specific unemployment rates that existed in 1956 (when the overall unemployment rate was 4.1 percent) and weight them by the age- and sex-specific shares of the labor force that prevail currently, the overall unemployment rate becomes 5 percent.

    66. He was puzzled that I did not want what was obviously a “ step up” toward what all Americans are taught to want when they grow up: money and power.

    67. Unless productivity growth is unexpectedly large, however, the expansion of real output must eventually begin to slow down to the economy’s larger run growth potential if generalized demand pressures on prices are to be avoided.

    68. However, when investment flows primarily in one direction, a

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