XDF 36-5

nuj_am

ls请看ssl507说的,这个reduce很重要

libraof

文章问的是reduce，不能同时reduce syntheise and degradation

ggg1991

以下是引用ssl507在2007-6-29 22:37:00的发言：

To begin to control a disease caused by a protein deficiency, the passage suggests that a promising experimental treatment would be to administer a drug that would reduce

这题的关健在看清题目，题目是说 control a disease caused by a
   protein deficiency，要reduce什么，如果选C的话，reduce both，那不等于没用，还是不能增加protein.

Good analysis for 'reduce'!

天蝎座1107

改了 明白了

[此贴子已经被作者于2009/7/29 13:51:31编辑过]

天蝎座1107

以下是引用ssl507在2007/6/29 22:37:00的发言：

To begin to control a disease caused by a protein deficiency, the passage suggests that a promising experimental treatment would be to administer a drug that would reduce

这题的关健在看清题目，题目是说 control a disease caused by a
   protein deficiency，要reduce什么，如果选C的话，reduce both，那不等于没用，还是不能增加protein.

非常有道理!!!

protein dificency 那就应该增加protein 如果把人家的sythesis也停了...

sumerlaw

不知到楼上问题得到解答没

我的看法是:However, recent investigations have shown that the concentrations of most mRNA’s correlate best, not with their synthesis rate, but rather with the equally variable rates at which cells degrade the different mRNA’s in their cytoplasm

中的、best不是指degrade best.而是说，两个结合起来是best. 因为有个equally。什么equal。synthesis和degrade效用equal.

所以第三题选C

再说第5题，protein deficiency。文章告诉我们，影响protein的两个因素：synthesis和蛋白质正比。degrade和蛋白质反比

所以为了增加蛋白质，就只能减少degrade

第八题就是：If a cell degrades both a rapidly and a slowly synthesized mRNA slowly, both mRNA’s will accumulate to high levels.（这句话的理解对文章的理解很重要，当分解的很慢时，mRna会集聚到高水平，说明了degrad

和mRNA及蛋白质的反向关系）

的同义转述

C什么癌症和科学家无关。科学家在二三两段提到，癌症第一段，没关系