七月JJ的一题

xygoal

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.

E  The level of telomerase production is always higher in cancerous tissue than in noncancerous tissue.

答案是C么？为什么？

paulstars

我觉得是C

用两种方法来解题：

1.A，B，D，E都带了绝对化的词only，any other和always，这些在题目里面没有明确出现过

2.以上根据绝对化的词还不能保证百分之百正确，再看C，其实就是题目的paraphrase（因为提到两个exception，所以就是no indication of）

不知道解答方法是否有道理，期待nn评判

[此贴子已经被作者于2008-7-29 22:43:16编辑过]

xygoal

谢谢

ucicc

同意二楼，再补充一点

原文说t酶only存在于快速分裂的细胞中，选项A说的是t是快速分裂细胞中only的酶，
only修饰的对象被偷换了。