A drug that is highly effective in treating many types of infection can, at present, be obtained only from the bark of the ibora, a tree that is quite rare in the wild. It takes the bark of 5,000 trees to make one kilogram of the drug. It follows, therefore, that continued production of the drug must inevitably lead to the ibora's extinction.
Which of the following, if true, most seriously weakens the argument above?
The drug made from ibora bark is dispensed to doctors from a central authority.
The drug made from ibora bark is expensive to produce.
The leaves of the ibora are used in a number of medical products.
The ibora can be propagated from cuttings and grown under cultivation.
The ibora generally grows in largely inaccessible places.
5000棵树=1KG药→继续制药会导致树灭绝
削弱
A、这种药发放给 doctors from a central authority,无关树灭绝
B、这种药贵,无关树灭绝
C、这种树的叶子用于很多药,无关,甚至加强
D、这种树被砍完还可以繁殖、也可以被栽培,CORRECT
E、这种树长在偏远之地,无关
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C:持续的生产药会导致树灭绝
削弱方向:持续生产不会导致树灭绝
选项E:如果largely inaccessible的话,就没办法使药品continued production,谈论的点偏离了,应该关注的是持续生产会不会导致灭绝
选项D:没选D是觉得还需要一点脑补,即人们会使用cutting的方式培养。实际上,D直接给出了不会导致灭绝的方法。
=The ibora can be propagated from cuttings and (can be) grown under cultivation.
I可以通过扦插繁殖,可以通过人工种植存活。
grow, grew, grown,被动语态跟的是动词的完成式/过去分词而不是过去式
bark,树皮,狗吠,
trunk,躯干
如果这种树长在largely inaccessible的地方,只会让获取bark的成本提高。因而药物更贵。但是依然会发生extinct的结果
只说 单位用量大,且野外稀少,但是不知道总的供给量(除了野外的)有多少,够不够大
E.讨论的问题是会不会灭绝~会不会用的完,和种植在哪里,能不能获取无关
Largely代表很难活的,并不是完全不可获得
largely inaccessible VS inaccessible的区别,加了largely反而更错
E项说的ibora比较难以获取,这只能说明会给continued production of the drug提高难度,或是让成品药的价格会更贵,但这和ibora是否会灭绝并无直接关系。
从另一方面说,因为非常难获取,所以人类很可能根本采集不到,所以不会灭绝啊,但是D说的是可以通过切的部分再生,可是需求量那么大的话,可能也会因为供不应求而灭绝啊登录 或 注册 后可以参加讨论