[求助]GWD-1-13,GWD-1-14

promiselu

Q14
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.
人均产量已经两倍，如果人没增多的话，总产量就是两倍了
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.
总产量上升可能雇的人也多了，所以人均不一定上升的。注意这里人均和总的不能对等
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.
如果有新矿开，人均产量可能上升——但是是在工人没有增加的情况下，而这点并没说明
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.
人均没上升，不一定总的也没上升
E. In Tribnia the cost of producing a given quantity of coal has declined over the past five years.
完全没提到cost的问题

双鱼游

完全同意楼上！

二楼往下掉

Q14
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.
人均产量已经两倍，如果人没增多的话，总产量就是两倍了
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.
总产量上升可能雇的人也多了，所以人均不一定上升的。注意这里人均和总的不能对等
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.
如果有新矿开，人均产量可能上升——但是是在工人没有增加的情况下，而这点并没说明
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.
人均没上升，不一定总的也没上升
E. In Tribnia the cost of producing a given quantity of coal has declined over the past five years.
完全没提到cost的问题

-- by 会员 promiselu (2010/8/18 13:13:09)

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.


我的问题是in that period of time难道不是指代the past five years吗？所以total coal production是不是说5年的总产量呢？
但是原文说的是现在是五年前的单位产量的两倍，所以这段时间的总产量为什么能是五年前的两倍呢？我当时就是因为in that period of time所以觉得A不对，求助！！！