gonghao 发表于 2007-7-21 23:55
to Drakedirectpay attention to the words in the argument and choicesArgument:A certain cultivated he ...
解释的太赞啊 先前没看到C: closely related plants与题目中提到的herbs 的关系!这下应该是相关因果中的CQ1加强因果间联系!one( produce histidine) thrive in soil with high concentrations of metals; others ( produce histidine) also thrive in soil with high concentrations of metals !
graceyin7 发表于 2006-11-22 02:03
GWD 28-28 爭議很久的一題,到底正確答案是?Which of the following most logically completes the argumen ...
答案是C,因为others of THE CLOSELY RELATED GROUP也是可以在高浓度金属土壤中生存,那么他们也产生大量的histidine就可以当作一个类比的加强来看。
A错在无关选项
B错在other amino acid也是无关选项
D错在weaken了argument,D没说histidine的作用,只是说另外一种让他在这种土壤中生存的解释,所以weaken
E错在weaken,如果长大后histidine下降了,说明histidine对于成年植物用处不大,weaken了argument。
A certain cultivated herb is one of a group of closely related plants (that thrive in soil with high concentrations of metals that are toxic to most other plants.)
that修饰closely related plants, 群体的共性是能够在金属土壤存活. 这个群体中一个个体的有H的特点, 于是认为是H导致他们能在金属土壤存活.