下面是培臻教育小编为大家整理的一篇关于LSAT考试逻辑推理练习题（29）的文章，供大家参考，下面是详细内容。
59.Learning how to build a nest plays an important part in thebreeding success of birds. For example, Dr. Snow has recorded the success of anumber of blackbirds in several successive years. He finds that birds nestingfor the first time are less successful in breeding than are older birds, andalso less successful than they themselves are a year later. This cannot be amere matter of size and strength, since blackbirds, like the great majority ofbirds, are fully grown when they leave the nest. it is difficult to avoid theconclusion that they benefit by their nesting experience.
Which one of the following, if true, wouldmost weaken the argument?
(A) Blackbirds build better nests than otherbirds.
(B) The capacity of blackbirds to lay viableeggs increases with each successive trial during the first few years ofreproduction.
(C) The breeding success of birds nestingfor the second time is greater than that of birds nesting for the first time.
(D) Smaller and weaker blackbirds breed justas successfully as bigger and stronger blackbirds.
(E) Up to 25 percent of all birds are killedby predators before they start to nest.
60.All savings accounts are interest-bearing accounts. The interestfrom some interest-bearing accounts is tax-free., so there must be some savingsaccounts that have tax-free interest.
Which one of the following arguments isflawed in a way most similar to the way in which the passage is flawed?
(A) All artists are intellectuals. Somegreat photographers are artists. Therefore, some great photographers must beintellectuals.
(B) All great photographers are artists. Allartists are intellectuals. Therefore, some great photographers must beintellectuals.
(C) All great photographers are artists.Some artists are intellectuals. therefore, some great photographers areintellectuals.
(D) All great photographers are artists.Some great photographers are intellectuals. Therefore, some artists must beintellectuals.
(E) All great photographers are artists. Noartists are intellectuals. Therefore, some great photographers must not beintellectuals.
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