lsat-10-2-12-->babypace转移

ygjm · 发表于 2003-12-31 14:11:00

12. Purebred dogs are prone to genetically determined abnormalities. Although such abnormalities often can be corrected by surgery, the cost can reach several thousand dollars. Since nonpurebred dogs rarely suffer from genetically determined abnormalities, potential dog owners who want to reduce the risk of incurring costly medical bills for their pets would be well advised to choose nonpurebred dogs.

Which one of the following, if true, most seriously weakens the argument?

(A) Most genetically determined abnormalities in dogs do not seriously affect a dog’s general well-being.

(B) All dogs, whether purebred or nonpurebred, are subject to the same common nongenetically determined diseases.

(C) Purebred dogs tend to have shorter natural life spans than do nonpurebred dogs.

(D) The purchase price of nonpurebred dogs tends to be lower than the purchase price of purebred dogs.

(E) A dog that does not have genetically determined abnormalities may nevertheless have offspring with such abnormalities

答案是A，但我觉得，A并不能对题干中的条件构成weaken，not seriously affect a dog’s general well-being也还是affect啊；如此说来， B不是也可以接受了吗？

dansy · 发表于 2003-12-31 14:36:00

B 是说它们都are subject to 同样的common NONgenetically determined diseases.
out of scope.

Miracle · 发表于 2004-1-1 11:43:00

可以这样想吗？
文中的前提是Purebred dogs are prone to genetically determined abnormalities.，the cost of correctness can reach several thousand dollars. 结论是dog owners who want to reduce the risk of incurring costly medical bills for their pets would be well advised to choose nonpurebred dogs.

削弱是要削弱结论，说明abnormalilties不会导致costly medical bills，如A中所说的abnormality不会影响dog的well-being, 也就是说不一定产生有medial cost的这个结果（Dog owner根本不用去为dog看病），自然就削弱了这个结论了，所以Ａ对。

dansy · 发表于 2004-1-1 13:39:00

miracleMM说的对。提干说杂种狗比纯种的好，B说在另一方面杂和纯一样，那么还是可以说杂比纯好，对吧？但是A里直接说纯不见得坏到哪里去。所以A是most seriously weakens the argum的，你们觉得呢？

ethyl · 发表于 2005-4-30 23:59:00

顶miracle

讲得太好啦

lsat-10-2-12-->babypace转移

lsat-10-2-12

lsat-10-2-12-->babypace转移

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