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It was nearly a decade in the making, but the first human trial using embryonic stem cells was approved on Friday. The trial, which will test a stem-cell-based treatment for spinal-cord injury, will begin later this summer and will use cells generated by Geron Corp. The approval marks the first time human stem cells, extracted and grown from embryos, will be transplanted into patients. Adult stem cells, which are present in many types of tissue, have been used in treatments for years — the most common being bone-marrow transplants in cancer care — but an embryonic study is a whole new thing. There's a good reason it's being greeted with so much excitement. Scientists believe that embryonic stem cells are more versatile than adult cells in generating the more than 200 different tissue types in the body. The need for healthy new cells is particularly acute in the case of spinal-cord injury, because once central-nervous-system tissue is destroyed, it does not regenerate — not in any significant way, at least. The Geron team began its work with what is known as a presidential stem-cell line — stem cells derived from discarded in vitro–fertilization embryos that already existed in 2001 when then President Bush decided to prohibit the use of federal funds to pursue human embryonic-stem-cell work. At the time, fewer than two dozen of these stem-cell lines were of good enough quality to use as a basis for human treatments.
【題組】Based on the above passage, which of the following statements is true? 
(A)If President Bush had not withdrawn federal funding in stem-cell study, cures to all stem-cell related diseases could have been found. 
(B)Geron Corp. found the stem-cell business lucrative and hence invested substantial money in it. 
(C)Stem cells extracted from embryos have a better chance to cure diseases than from adults. 
(D)To provide quality treatments, approximately two dozen of stem-cell lines would suffice.

答案：C
難度： 適中
1F
Chun Jen Wan 高二上 (2012/02/21)

根據上述短文中，下列敘述哪個正確？

(A)如果布什總統沒有撤回在幹細胞研究的聯邦資金，所有的幹細胞有關的疾病的治療方法可以被發現。

(B)傑龍公司發現幹細胞業務利潤豐厚，因此在相當大的資金投入。

(C)從胚胎中提取幹細胞治愈疾病比成年人有更好的機會。

(D)提供優質的治療，大約兩打的幹細胞系就足夠了。


It was nearly a decade in the making, bu..-阿摩線上測驗