Q14: That the application of new technology can increase the productivity of existing coal mines is demonstrated by the case of Tribnia's coal industry. Coal output per miner in Tribnia is double what it was five years ago, even though no new mines have opened. Which of the following can be properly concluded from the statement about coal output per miner in the passage? A. If the number of miners working in Tribnian coal mines has remained constant in the past five years, Tribnia's total coal production has doubled in that period of time. B. Any individual Tribnian coal mine that achieved an increase in overall output in the past five years has also experienced an increase in output per miner. C. If any new coal mines had opened in Tribnia in the past five years, then the increase in output per miner would have been even greater than it actually was. D. If any individual Tribnian coal mine has not increased its output per miner in the past five years, then that mine's overall output has declined or remained constant. E. In Tribnia the cost of producing a given quantity of coal has declined over the past five years. 答案是A,想知道为什么C不对?? 下面贴的是我看的讨论贴里说C不对的理由,想不明白。 C。缺少一个条件,technology,题目是technology和new mine两个条件给出的 increase,所以,只给一个条件发生变化,而没有给出另外一个条件的情况,我们不能得出准确的判断 C 错 在 : ANY 太 绝 对 。 而 且 开 新 矿 和 矿 工 的 人 均 产 出 不 能 建 立 起 联 系
C 错 在 : ANY 太 绝 对 。 而 且 开 新 矿 和 矿 工 的 人 均 产 出 不 能 建 立 起 联 系 c不对,因为假设那些新开的出现什么事故呢?那就不能证明会一定增长.
我的问题如下
我的问题如下
请问C选项的意思:如果任何一个新的煤矿在过去的5年里在T新开,那么每一个矿工的产量的提高就比实际的大。是这个意思吗?? 那么原文中说Coal output per miner in Tribnia is double ,我觉得开不开新矿都没关系,矿工的产量都是两倍呢。所以C不对。 究竟C为什么不对呢,请NN们帮忙看看。
[此贴子已经被作者于2006-9-3 19:25:43编辑过] |