楼主应该去CR JJ贴讨论吧 呵呵
我谈谈我的想法
CR:
2、一道题讲一本杂志（关于gardening)应该拒绝为trilim和另外一种植物作广告to new gardener，因为这些植物不能在cultivation下存活，只能从wild移植过来，所以为了保护野生植物，不应该登这些广告；
问评价：从wild移植过来，是否能保护野生植物
问假设：从wild移植过来，不！能保护野生植物
增强削弱同假设
3一道题讲两种连锁店的sales revenue, 好像是main chains和dependently chains ,1995main的revenue比1994年上涨了20%，1995年main的revenue是整个行业revenue的40%，所以1994年 dependetly的revenue比main得多，要求assumption。
假设1：该行业只有这2种连锁店？如果是dependently chains 1994年revenue就是60%，如果不是，可能就不是就不一定比MAIN多，
这个可能不对
假设2：假设 D的1994-1995的增长率不高于80%，
如果就是有2个连锁，
1995年总利润R=300元
M95=40%R=120，
D95=60%R=180,
根据M的增长率 M94*1.2=M95=120 所以 M94=100元
如果D94=100元,即D94=M94,根据前面的D95=180元,
那么D94到D95的增长率80%，
所以应该假设 D1994-1995的增长率不高于80%
Editor: Articles in Gardening Magazine often spur sales of the plants they describe, particularly among people new to gardening. Accordingly, we will no longer publish articles or accept advertisements praising the beauty of rare wildflowers. Most such plants sold to gardeners have been difficult to propagate under cultivation, so plant sellers often collect them in the wild. Our new policy is part of our efforts to halt this yearly plundering of our native plant populations.
Which of the following, if true, casts the most doubt on the wisdom of the magazine's new policy as a way of pursuing the intended effect?
A. When people new to gardening buy plants, they often fail to take adequate care of the plants that they buy and become discouraged from buying those varieties again.
B. Plant sellers who sell rare wildflowers have no reasonably inexpensive alternative way to offer their wares directly to new gardeners.
C. The demand for rare wildflowers rarely exceeds the number of such plants that can be collected in the wild by plant sellers.
D. The propagation of rare wildflowers often depends on the plants' interaction with other organisms in their environment, such as plants that create suitable soil conditions or insects and birds that disperse seeds.
E. Revenues from sales of plants collected in the wild are supporting the discovery of new low-cost techniques enabling rare wildflowers to be readily propagated in nurseries.
答案是E
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