[揽瓜阁逻辑小分队] day61

Severus.

1.        政府挖煤
Twenty years ago, Balzania put in place regulations requiring operators of surface mines to pay for the reclamation of mined-out land. Since then, reclamation technology has not improved. Yet, the average reclamation cost for a surface coal mine being reclaimed today is only four dollars per ton of coal that the mine produced, less than half what it cost to reclaim surface mines in the years immediately after the regulations took effect.
20年前，巴尔扎尼亚制定了规定，要求露天矿山经营者为采空土地的复垦支付费用。从那以后，回收技术没有改进。然而，目前正在回收的露天煤矿每吨煤的平均回收成本只有4美元，还不到法规生效后几年露天煤矿回收成本的一半。
Which of the following, if true, most helps to account for the drop in reclamation costs described?B正确是C
A.    Even after Balzania began requiring surface mine operators to pay reclamation costs, coal mines in Balzania continued to be less expensive to operate than coal mines in almost any other country.
B.    In the twenty years since the regulations took effect, the use of coal as a fuel has declined from the level it was at in the previous twenty years.
C.    Mine operators have generally ceased surface mining in the mountainous areas of Balzania because reclamation costs per ton of coal produced are particularly high for mines in such areas.
D.    Even after Balzania began requiring surface mine operators to pay reclamation costs, surface mines continued to produce coal at a lower total cost than underground mines.
E.     As compared to twenty years ago, a greater percentage of the coal mined in Balzania today comes from surface mines.
A:即使在巴尔扎尼亚开始要求露天煤矿经营者支付复垦费用之后，巴尔扎尼亚的煤矿运营成本仍然低于几乎任何其他国家的煤矿。
B.在法规生效后的20年里，煤炭作为燃料的使用量已经从前20年的水平下降了。
C:煤矿经营者普遍停止了巴尔扎尼亚山区的露天采矿，因为这些地区每生产一吨煤的回收费用特别高。
D.即使在巴尔扎尼亚开始要求露天煤矿经营者支付复垦费用之后，露天煤矿仍然以低于地下煤矿的总成本生产煤炭。
E.与20年前相比，今天巴尔扎尼亚开采的煤炭中有更大的比例来自露天煤矿。
2.        美国花店
好多gardener都觉得一个什么种子是最popular的，因为一个最大的花店10%的收入都是靠卖那个种子赚的。
问：削弱
找他因：
只有这个花店有这种种子，所以只能在这一家店买。
这个种子贵，利润高，但销量其实不算多。
其他店销售这种种子并不多。
削弱：这家花店卖的花小于十种
假设：这家花店卖东西种类不少于十种；这个花店卖这个科属的花种类超过十种
3.        地方降薪
一公司在各个区域的各分公司的总体平均工资降低了，在某地区的该公司员工很可能会到别的地方找工作因为工资低于平均的工资。
问：削弱。
该地平均的工资也降低了，这些分公司工资不算低
这两处子公司与其他子公司工资差不多，工资不算低

ziiyii

同意！               

海菜头子

同意！               

林limbo

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林limbo

1\C引入他因 解释
2\这个花店卖的花总数就小于十种///有其他花的种类销量超过10%
3\降薪以后这两个子公司的工资也明显高于其他公司

NWUZS

Mark一下！               

NWUZS

1.        政府挖煤
Which of the following, if true, most helps to account for the drop in reclamation costs described?
A.    Even after Balzania began requiring surface mine operators to pay reclamation costs, coal mines in Balzania continued to be less expensive to operate than coal mines in almost any other country.
B.    In the twenty years since the regulations took effect, the use of coal as a fuel has declined from the level it was at in the previous twenty years.
C.    Mine operators have generally ceased surface mining in the mountainous areas of Balzania because reclamation costs per ton of coal produced are particularly high for mines in such areas.
D.    Even after Balzania began requiring surface mine operators to pay reclamation costs, surface mines continued to produce coal at a lower total cost than underground mines.
E.     As compared to twenty years ago, a greater percentage of the coal mined in Balzania today comes from surface mines.

选c

2.        美国花店
好多gardener都觉得一个什么种子是最popular的，因为一个最大的花店10%的收入都是靠卖那个种子赚的。
问：削弱
花店种类少于十种
3.        地方降薪
一公司在各个区域的各分公司的总体平均工资降低了，在某地区的该公司员工很可能会到别的地方找工作因为工资低于平均的工资。
问：削弱
总体工资同时降低或该公司平均工资降低后仍高于其他地区平均水平

vestofmmw

看一下！               

sherlockkkkk

Mark一下！               

Shell_liang

看一下！