题目信息
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.
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正确答案：
C:The presence of telomerase in bone marrow is no indication of bone marrow cancer.
T是细胞里唯一可以促进分裂的酶。因此成年人人体里缺少这种酶。骨髓除外，即使是成年人，骨髓细胞也会不停的分裂代替旧细胞。癌细胞也是一个例外，因为他们会不停的分裂。 The information provided most strongly supports which of the following? 支持下面哪个（结论题，归纳题）从原文推出 A Telomerase is the only enzyme that is present in cancerous cells but absent from cells that are not actively dividing. T是唯一一种存在于癌细胞但在不活跃的细胞中没有的酶 原文没有提到 B In children, the only body tissues from which telomerase is absent are those in which cells are not rapidly dividing. 小孩怎么样 ，没有提及 C The presence of telomerase in bone marrow is no indication of bone marrow cancer. 骨髓有T不表明有骨髓癌症。正确 D Cancer of the bone marrow develops more rapidly than cancer growing in any other kind of adult tissue. 骨髓中的癌细胞比成年人其他部分发展的快，没有提到 E The level of telomerase production is always higher in cancerous tissue than in noncancerous tissue. 癌组织 比 非癌组织 总是产生更多的Tel。 没有提及
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