|
141. Unlike transplants between identical twins, whose genetic endowment is the same, all patients receiving hearts or other organs must take antirejection drugs for the rest of their lives.
(A) Unlike transplants between identical twins, whose genetic endowment is the same (B) Besides transplants involving identical twins with the same genetic endowment (C) Unless the transplant involves identical twins who have the same genetic endowment (D) Aside from a transplant between identical twins with the same genetic endowment (E) Other than transplants between identical twins, whose genetic endowment is the same In A and B, the phrases beginning Unlike... and Besides... modify patients, the subject of the main clause; thus A absurdly states that Unlike transplants ..., patients... must take ... drugs, and B that all patients except for transplants... must take ... drugs.
In B and D the expression identical twins with the same genetic endowment
wrongly suggests that only some identical twin pairs are genetically identical (逻辑意思表达的准确性). In E, the construction Other than transplants..., all patients ... must take... drugs illogically suggests, as in B, that some patients are transplants. Choice C, the best answer, solves these problems by using a clause introduced by Unless to describe the exception to the rule and a nonrestrictive clause beginning with who to describe the characteristic attributed to all identical twins. 1. A b d e 几个答案都有这个问题，除了移植。。。病人。。。
这种毛病，只有c用条件从句来说明除非怎么样，最恰当。
2. D 中identical twins with the same genetic endowment 说有相同排列的除外，就是说还有一些idetical twins 没有相同的基因排列，而c 中用who 来进一步说明，是非限定的定于从句。由此可见，限定性定语和非限定性定语的区别就在于整体和局部的关系—现在分词和that定语从句的区别恰恰就是限定和非限定定语的区别；with属于限定定语
这里who从句是非限定的 At least 10% of the people in country x who are 65 years old or older employed? 这里who是限定的 怎么理解阿?? | 
京公网安备11010202008513号 京ICP证101109号 京ICP备12012021号
发表于 2006-8-14 13:59:00
