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标题: [求助)大全-16-13 [打印本页]
作者: Across 时间: 2004-3-22 13:23
标题: [求助)大全-16-13
这个题目看了半天没明白. 求教. 觉得自己挺迷惑
A severe drought can actually lessen the total amount of government aid that United States farmers receive as a group. The government pays farmers the amount, if any, by which the market price at which crops are actually sold falls short of a preset target price per bushel for the crops. The drought of 1983, for example, caused farm-program payments to drop by $10 billion.
Given the information above, which of the following, if true, best explains why the drought of 1983 resulted in a reduction in farm-program payments?
(A) Prior to the drought of 1983, the government raised the target price for crops in order to aid farmers in reducing their debt loads.
(B) Due to the drought of 1983, United States farmers exported less food in 1983 than in the preceding year.
(C) Due to the drought of 1983, United States farmers had smaller harvests and thus received a higher market price for the 1983 crop than for the larger crop of the preceding year.
(D) Due to the drought of 1983, United States farmers planned to plant smaller crops in 1984 than they had in 1983.
(E) Despite the drought of 1983, retail prices for food did not increase significantly between 1982 and 1983.
原来我选的是E, 另外有人选A, 可是答案是C, 看看到底怎么个说法???
后来又觉得好像C是有点道理.
多谢了先
作者: weiyu 时间: 2004-3-22 13:26
顶！！必要条件的好坏还有程度之分吗？ best support=support, best weaken= weaken, best assumption=assumption对吗？
作者: dansy 时间: 2004-3-22 13:56
本题结论是干旱减少了政府给农民的资助金。原因是政府给农民的资助金额是 by which the market price at which crops are actually sold falls short of a preset target price per bushel for the crops，就是crop的实际售出的市场价(X)比预设的价格(Y)低的这部分金额，即(Y-X)。那么C中X大，则(Y-X)小，这就解释了结论。选项A中政府提高了Y， 那么(Y-X)变大，与结论矛盾。选项E说食物零售价在82与83之间没有增加，并不能解释结论。
作者: weiyu 时间: 2004-3-22 14:13
以下是引用dansy在2004-3-22 13:56:00的发言：
本题结论是干旱减少了政府给农民的资助金。原因是政府给农民的资助金额是 by which the market price at which crops are actually sold falls short of a preset target price per bushel for the crops，就是crop的实际售出的市场价(X)比预设的价格(Y)低的这部分金额，即(Y-X)。那么C中X大，则(Y-X)小，这就解释了结论。选项A中政府提高了Y， 那么(Y-X)变大，与结论矛盾。选项E说食物零售价在82与83之间没有增加，并不能解释结论。
可A说的是83年以前，Y83以前>Y83,难道不能从必要性方面说明Y83前-X83前>Y83-X83吗？
作者: dansy 时间: 2004-3-22 14:23
我的理解是A说在83年干旱前提高了Y，那么这个Y在83年干旱后被用了，所以83年(Y-X)变大了。如果要比较(Y83前-X83前)和(Y83-X83)，光有Y的比较是不够的，还需要X的比较。
欢迎大家讨论。
作者: weiyu 时间: 2004-3-22 15:23
Agree.
作者: Across 时间: 2004-3-23 01:08
标题: 回复：（dansy）我的理解是A说在83年干旱前提高了Y，那...
以下是引用dansy在2004-3-22 14:23:00的发言：
我的理解是A说在83年干旱前提高了Y，那么这个Y在83年干旱后被用了，所以83年(Y-X)变大了。如果要比较(Y83前-X83前)和(Y83-X83)，光有Y的比较是不够的，还需要X的比较。
欢迎大家讨论。
我后来的感觉是题目里面有个整体和部分的关系:
A severe drought can actually lessen the total amount of government aid that United States farmers receive as a group. The government pays farmers the amount, if any, by which the market price at which crops are actually sold falls short of a preset target price per bushel for the crops. The drought of 1983, for example, caused farm-program payments to drop by $10 billion.
Given the information above, which of the following, if true, best explains why the drought of 1983 resulted in a reduction in farm-program payments?
(A) Prior to the drought of 1983, the government raised the target price for crops in order to aid farmers in reducing their debt loads.
(B) Due to the drought of 1983, United States farmers exported less food in 1983 than in the preceding year.
(C) Due to the drought of 1983, United States farmers had smaller harvests and thus received a higher market price for the 1983 crop than for the larger crop of the preceding year.
(D) Due to the drought of 1983, United States farmers planned to plant smaller crops in 1984 than they had in 1983.
(E) Despite the drought of 1983, retail prices for food did not increase significantly between 1982 and 1983.
题目问的是"资助的总数"减少
C选项正好说的是大型谷物的资助变成"负值"
那么总的资助就是减少的了
E, A都不能说明是总的资助减少.
A不能说明资助减少
而且, E偷换概念, 把crop 换成了food. ----就像从前有个羊毛和棉花的题目: 原材料和成品的价格应该没有的必然关系
唉, 就让我上这了这个当!!!!!
还请指教
作者: weiyu 时间: 2004-3-23 15:42
以下是引用dansy在2004-3-22 14:23:00的发言：
我的理解是A说在83年干旱前提高了Y，那么这个Y在83年干旱后被用了，所以83年(Y-X)变大了。如果要比较(Y83前-X83前)和(Y83-X83)，光有Y的比较是不够的，还需要X的比较。
我觉得不能理解出83年后是否采用，我们只知道83年前是target price高的
这道题的C选项不严谨，按照hostess pumpkin所注，说大的crop售价提高，但是这只是谷物的一方面，如果小的谷物售价偏低，还是有可能是最后的payment不减少．但ETS只要考必要条件，那么A，C两个必要条件的必要性怎么比较呢？
作者: dansy 时间: 2004-3-23 16:13
C中的larger crop会不会是指larger harvest啊？相对于前面说的smaller harvest。 而不是指大的谷物吧？
作者: weiyu 时间: 2004-3-23 16:32
以下是引用dansy在2004-3-23 16:13:00的发言：
C中的larger crop会不会是指larger harvest啊？相对于前面说的smaller harvest。 而不是指大的谷物吧？
Due to the drought of 1983, United States farmers had smaller harvests and thus received a higher market price for the 1983 crop than for the larger crop of the preceding year.
注意两个for的平行结构．我觉得larger crop和crop平行．欢迎讨论
作者: weiyu 时间: 2004-3-23 16:33
E解释的真好
作者: quiny 时间: 2005-7-15 16:25
3X
作者: xiangqinzh 时间: 2006-10-11 16:46
dansy解释的真好
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