标题: lsat-10-2-12-->babypace转移 [打印本页] 作者: ygjm 时间: 2003-12-31 14:11 标题: lsat-10-2-12 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？ 作者: dansy 时间: 2003-12-31 14:36
B 是说它们都are subject to 同样的common NONgenetically determined diseases. out of scope.作者: Miracle 时间: 2004-1-1 11:43
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.