[求助]大全36

wanderdreaｍ

斑竹同学，容我再罗索几句

对的，文章说certain蛋白质会引起癌变。

虽然选项c没有说certain，也没办法说certain，但是它说likely，说两种蛋白质的过量有可能导致病变，这个和文章无矛盾，无可厚非。

c的错误在于，答不对题。

题目要求解释蛋白质过量的原因，c说了蛋白质过量的可能性结果。

benpiao

能不能解释一下第3题？谢了

starist

我也晕

andylouis

同问？？？

lichabrend

up

hlp1222

3.    Which of the following best describes the relationship between the second and third paragraphs of the passage?

(A) The second paragraph presents arguments in support of a new theory and the third paragraph presents arguments against that same theory.

(B) The second paragraph describes a traditional view and the third paragraph describes the view that has replaced it on the basis of recent investigations.

(C) The third paragraph describes a specific case of a phenomenon that is described generally in the second paragraph.

(D) The third paragraph describes an investigation that was undertaken to resolve problems raised by phenomena described in the second paragraph.（C）

(E) Both paragraphs describe in detail specific examples of the phenomenon that is introduced in the first paragraph.

第三题真不大明白

应该是文章结构还不是很清楚 虽然前面有nn将文章翻译了

没理解的地方在于

第二段说了correlate best with the rate of degradation，为何第三段又说most effectively regulated by both synthesis and degradation。那第三段就是对第二段的观点的修正。真的不明白为什么选c

不好意思 打小语文就不好 段落大意一直不喜欢

希望各位多多指教

[此贴子已经被作者于2009/9/11 19:51:30编辑过]

hlp1222

up

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