急啊！！马上要考了，请牛牛们帮帮忙，谢谢

sasha_wen

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 half this yearly plundering of our native plant populations.

Which of the following, if true, support 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 discourged from buying those varieties again.
(B) Plant sellers who sell rare wildflowers have no reasonably inexpensive alternate way to offer their wares directly to new gardens.
(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 plant's 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 innurseries.
答案是B
Our new policy is part of our efforts to half this yearly plundering of our native plant populations.这句话什么意思？
选项是怎么加强的，不理解？？

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 half 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 discourged from buying those varieties again.
(B) Plant sellers who sell rare wildflowers have no reasonably inexpensive alternate way to offer their wares directly to new gardens.
(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 plant's 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
选项是怎么削弱的，不理解？？

abbylung

我想清楚了，第一个B，卖花的人没有更好的办法把花卖出去，只有通过杂志的宣传才能卖出去，现在没有杂志的宣传了，花就卖不出去了，可以达到目的
第二个E，即使没有杂志的宣传，卖花的人还是会采花，为了获得收入，从而尝试人工培育

nrnr

In the question stem, it mentions that advertisment spur the sales of the rare wildflowers but usually gardeners cannot cultivate them, therefore, plant sellers have to collect them in the wild.
For answer B, it eliminates the possibility that there are other better options to spur sales of wildflowers and then it supports the conclusion. Or try to think from the other angle. If there are other better options there, plant sellers can use it instead of advertising to spur the sales. And then even if editors stop to accept new advertisment, it won't help on the situation and plant sellers will continue to collect from wild if they have customers.

sasha_wen

第一题的加强我还是不明白
第二题的削弱倒是看明白了
卖稀有植物所得的收入能够支持低成本的新技术，这个技术能人工培育稀有植物
望牛牛们指正啊~

sdcar2010

For the first one: B is the strengthener since it confirms that by disallowing the ad, no one other than the sellers  themselves knows who owns and has those rare wild  flowers.  Therefore, no new buyers will show up at the doors of the sellers.

For the second one: E is the weakener since according to E, if the policy goes alive and becomes successful, it would hurt the efforts to propagate those rare flowers in the nurseries, which, in turn, would plunder the native plant polulations.  This is against the goal of the policy.