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标题: Q31: TTGWD2-Q21:请教!糊涂郁闷中 [打印本页]

作者: maggiecookies 时间: 2008-7-26 17:54
标题: Q31: TTGWD2-Q21:请教!糊涂郁闷中

Telomerase is an enzyme that is produced only in cells that are actively dividing. For this reason it is generally absent from body tissues in adults. Bone marrow is an exception to this rule, however, since even in adults, bone marrow cells continually divide to replace old blood cells. Cancers are another exception, because their cells are rapidly dividing.

The information provided most strongly supports which of the following?

A.Telomerase is the only enzyme that is present in cancerous cells but absent from cells that are not actively dividing.

B.In children, the only body tissues from which telomerase is absent are those in which cells are not rapidly dividing.

C.The presence of telomerase in bone marrow is no indication of bone marrow cancer.

D.Cancer of the bone marrow develops more rapidly than cancer growing in any other kind of adult tissue.

EThe level of telomerase production is always higher in cancerous tissue than in noncancerous tissue

作者: maggiecookies 时间: 2008-7-27 17:49

没人回答.吗? 帮个忙吧, 实在想不明白

作者: quietliu 时间: 2008-7-27 18:15

B.In children, the only body tissues from which telomerase is absent are those in which cells are not rapidly dividing.

C.The presence of telomerase in bone marrow is no indication of bone marrow cancer.

我作过，好像C是答案吧，你是那个不理解，我当时觉得B有点像，但是B不对，因为 not rapidly dividing, 也是 dividing, 我觉得也应该有，所以就是C了。你是那个不理解，什么信息也没有，我们不明白。

作者: gmatkaoshi 时间: 2008-7-27 18:29

我觉得是c

a 不对因为cancerous cells 中不一定只有telomerase

b 不对因为一种tissue里没有t,但tissue里的cell还是可以divide的

d不对因为没有提及比较

e不对因为他说t的level在非癌组织中比癌组织中高原文没比较

c对他意思是在骨髓中出现t不代表患癌症原文说t可以在癌里出现也可以在骨髓出现若是在骨髓里出现并不一定代表得癌

作者: maggiecookies 时间: 2008-7-27 18:43

谢谢, 我做的时候我是没有办法推出来C的逻辑关系. 我没理解好可以在骨髓出现 .

现在明白啦...

作者: NOTALOSER 时间: 2008-11-23 14:03
这题可以用排除法做，要先把各元素的关系列出来，一个一个对照，难度其实不大，但是就是挺麻烦的

作者: tiffany1102 时间: 2009-4-22 21:11
up..

作者: jean1280 时间: 2009-6-20 18:07
up

作者: fiona_hq 时间: 2009-7-26 13:01
UP

作者: yy179920478 时间: 2009-8-4 11:27
up

作者: Schnellv 时间: 2009-8-31 00:25

关键在于加粗的another，C表明这是两个原因，而不是同一个，support

愚见

[此贴子已经被作者于2009/8/31 0:25:22编辑过]

作者: fromludi 时间: 2009-11-3 15:21
当初做的时候，一心觉得bone marrow跟cancer是并列的。
所以一看到什么bone marrow cancer就直接排除了……

作者: true 时间: 2010-3-4 23:34
唉，又犯错了。

我以为是选项支持题干，这题问的是题干支持选项。

都不止一次了。下次不能在这样了。

作者: xjiang99 时间: 2013-11-18 04:27
太谢谢了

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