扫描二维码，直接登录
题库 / GMATLA-CR-8
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?
Telomerase is the only enzyme that is present in cancerous cells but absent from cells that are not actively dividing.
In children, the only body tissues from which telomerase is absent are those in which cells are not rapidly dividing.
The presence of telomerase in bone marrow is no indication of bone marrow cancer.
Cancer of the bone marrow develops more rapidly than cancer growing in any other kind of adult tissue.
The level of telomerase production is always higher in cancerous tissue than in noncancerous tissue.
这道题也是个bug。。。C选项应该是第一时间就排除的选项
题目中说 1.骨髓 2.癌细胞 都可以产生T物质。
那么 骨髓中出现的T物质 可能的来源在于 骨髓本身产生的/ 骨髓中的癌症产生的
所以C选项为什么排除骨髓中的癌症这个可能性？？
注意C中的indication不是表明/证明 而是迹象/暗示的意思，只是表达一种推测而不是断定
为什么骨髓中的T物质就不可能是骨癌的迹象？
文中有任何信息说明 “骨髓是不可能产生癌症” 的前提吗？
没有。
本题答案是错哒，不要再瞎揣测了。
不想后来被误导，特意上来说一下，官方付费包prep exam3也有这道题，答案就是C
登录 或 注册 后可以参加讨论