△这个句子的关键在于use后面的修饰成分，尤其是两个to不定式的意义，说明了禁止的内容。再者注意括号里对embryos的解释。
试题解析
63. [B] 白宫对这一克隆技术方面的消息反应强烈。
根据第一段第一、二句，当苏格兰一个研究小组三个月前透露他们克隆了一只成年羊时，消息震动了世界，克林顿总统立即作出了反应，他宣布反对用这种特殊的畜牧技术克隆人，要求禁止使用联邦基金进行这样的研究——虽然尚未有人提出这样做，他要求成立一个由普林斯顿校长Shapiro领导的独立专家小组，就克隆人研究方面的国家政策问题拿出建议，在三个月内向白宫汇报。从这两句的内容来看，白宫的反应不仅迅速而且强烈。
[A]联邦基金已被用于一个克隆人的项目中。文中中只说不应该用于克隆人的项目中，而选项错误在时态用了现在完成时，表示已经使用。
[C]NBAC被授权控制克隆技术的滥用。国家生物道德顾问委员会(NBAC)的职责是向白宫提出有关克隆人技术的政策性建议。
[D]白宫已得到专家组有关克隆技术的建议，文章中说这个草案还没有完成，那当然白宫就还没有受到其建议，也错在用了完成时。
64. [C] 意为：使用私人基金研究克隆人技术是犯罪行为。
在本文中第二段第三句，专家组还没有在一个关键问题上达成一致，即：是否建议立法，规定私人出资研究克隆人技术是犯罪行为。所以选项中用了is就变成了客观事实。
[A]应该立法禁止使用联邦基金研究克隆人技术。根据第二段第一句，NBAC将要求克林顿总统有关使用联邦基金研究克隆人技术的禁令无限期延长，并且可能要求立法禁止。根据第四段，他们也计划呼吁继续禁止使用联邦政府基金利用人体细胞核来克隆婴孩的企图。
[B]不再对克隆人体DNA技术作更多的限制。根据第二段第二句，NBAC成员们计划对建议的内容严加措辞，以避免对涉及克隆人体DNA（脱氧核糖核酸）和细胞的研究增加新的限制——因为在分子生物研究中这种研究属常规研究课题。
[D]克隆人类将是违背道德价值观的。第三段第一句指出，Shapiro在5月17日开会讨论的建议序言草稿中表示，专家组已取得广泛的一致意见，认为“试图利用成人细胞核克隆技术来创造人是不道德的。”
65. [D] 意为：有关这个问题法律己经作出了明确的陈述和规定。
根据第四段第二句，因为现行联邦法律已经禁止使用联邦基金创造供研究用的胚胎，或有意识地危害胚胎的性命，NBAC的建议将不再涉及胚胎的研究。
[A]胚胎研究只不过是代表克隆技术的新发展。
[B]婴儿的健康状况不是胚胎研究所主要关心的问题。
[C]胚胎的性命在胚胎研究中不会受到威胁。这三个选项均与文章内容不符。
66. [A] 意为：某些NBAC成员对彻底禁止克隆技术的研究表示犹豫不决。
根据最后一段第二句，在是否进一步呼吁制定联邦法律彻底禁止克隆人技术研究方面，NBAC成员意见不一。虽然Shapiro和多数成员都赞成呼吁做这样的立法，但是，在一次电话采访中，他称这一问题仍然“悬而未决”。
[B]禁止克隆人技术研究的法律将很快获得通过。
[C]私人资助的研究者将会响应NBAC的呼吁。根据最后一段第一句，虽然不作出法律上的强行禁止，NBAC成员们也表示，他们将呼吁私人资助的研究者和研究机构不要用细胞核移植技术来克隆人。但是这里并没有提到——也没有足够的证据推测出私人资助的研究者对这一呼吁的态度。
[D]克隆人技术研究这一问题将很快获得解决。
参考译文
当一个苏格兰研究小组透露三个月前他们克隆了一只成年绵羊时，世界为之震惊，克林顿总统迅速做出反应。他宣称反对利用这种非同寻常的畜牧业技术去克隆人，并下令禁止使用联邦资金做这样的实验——尽管还没有人提议要那样做——并责成成立一个由普林斯顿大学校长哈罗德·夏皮罗为首的独立专家小组，在90天内拿出有关克隆人的国家政策的建议，向白宫汇报。这个名为“全国生物伦理道德顾问委员会”(NBAC)的小组一直在非常积极地工作，集思广益，并诉诸笔端；在5月17日的一次会议上，委员们就接近定稿的意见书取得了一致意见。
NBAC将要求克林顿总统禁止使用联邦资金克隆人的90天禁令无限期地延长，并且还可能要求将之立法。但是，NBAC成员们正计划在建议的措辞上更为严谨，以避免给克隆人体DNA或细胞等研究带来更多地限制——（这属于）分子生物研究中的常规课题。然而，该
小组尚未在一个关键问题上达成一致，即是否建议立法机关把将私人资金用于克隆人的行为视为犯罪。
在5月17日会议上讨论的建议序言草案中，夏皮罗表示，专家组已取得广泛的共识，认为“试图利用成人细胞核去克隆婴儿将是违背道德伦理的”。夏皮罗解释说在与会期间，道德上的怀疑主要源于对婴儿健康带来危害的担忧。随后，该小组非正式地接受了几条一般的结论，尽管有些细节尚无定论。
NBAC计划呼吁继续禁止使用联邦政府基金利用人体细胞核去克隆婴孩的任何企图。因为现行的联邦法律已经禁止使用联邦基金克隆研究用的胚胎（人类子代出生前的最早阶段）或有意识地危及胚胎的生命，NBAC在胚胎研究这一问题上保持沉默。
NBAC的成员明确表示，他们呼吁由私人提供资金的研究人员和机构不要试图通过人体细胞核转移去克隆人。但他们在是否进一步要求联邦立法强令彻底禁止克隆人这一问题上存在分歧。夏皮罗和大多数委员赞成将此立法，但在电话采访中，他透露这一议题仍“悬而未决”。
1999 Text 5
Science, in practice, depends far less on the experiments it prepares than on the preparedness of the minds of the men who watch the experiments. Sir Isaac Newton supposedly discovered gravity through the fall of an apple. Apples had been falling in many places for centuries and thousands of people had seen them fall. But Newton for years had been curious about the cause of the orbital motion of the moon and planets. What kept them in place? Why didn't they fall out of the sky? The fact that the apple fell down toward the earth and not up into the tree answered the question he had been asking himself about those larger fruits of the heavens, the moon and the planets.
How many men would have considered the possibility of an apple falling up into the tree？ Newton did because he was not trying to predict anything. He was just wondering. His mind was ready for the unpredictable. Unpredicability is part of the essential nature of research. If you don't have unpredictable things, you don't have research. Scientists tend to forget this when writing their cut and dried reports for the technical journals, but history is filled with examples of it.
In talking to some scientists, particularly younger ones, you might gather the impression that they find the \method\a substitute for imaginative thought. I've attended research conferences where a scientist has been asked what he thinks about the advisability of continuing a certain experiment. The scientist has frowned, looked at the graphs, and said \data are still inconclusive.\Is it worthwhile going on? What do you think we might expect?\having even been asked to speculate.
What this amounts to, of course, is that the scientist has become the victim of his own writings.
He has put forward unquestioned claims so consistently that he not only believes them himself, but has convinced industrial and business management that they are true. If experiments are planned and carried out according to plan as faithfully as the reports in the science journals indicate, then it is perfectly logical for management to expect research to produce results measurable in dollars and cents. It is entirely reasonable for auditors to believe that scientists who know exactly where they are going and how they will get there should not be distracted by the necessity of keeping one eye on the cash register while the other eye is on the microscope. Nor, if regularity and conformity to a standard pattern are as desirable to the scientist as the writing of his papers would appear to reflect, is management to be blamed for discriminating against the \balls\
67. The author wants to prove with the example of Isaac Newton that ________.
[A] inquiring minds are more important than scientific experiments
[B] science advances when fruitful researches are conducted
[C] scientists seldom forget the essential nature of research
[D] unpredictability weighs less than prediction in scientific research
68. The author asserts that scientists ________.
[A] shouldn't replace \
[B] shouldn't neglect to speculate on unpredictable things
[C] should write more concise reports for technical journals
[D] should be confident about their research findings
69. It seems that some young scientists ________.
[A] have a keen interest in prediction
[B] often speculate on the future
[C] think highly of creative thinking
[D] stick to \
70. The author implies that the results of scientific research ________.
[A] may not be as profitable as they are expected
[B] can be measured in dollars and cents
[C] rely on conformity to a standard pattern
[D] are mostly underestimated by management
核心词汇
1. in practice 实际上；在实践中
2. depend on 依靠，取决于
3. the preparedness of the minds 有准备性的头脑
4. supposedly 据认为；据信
5. cause 原因；起因；事业
6. orbit 轨道
7. motion 运动
8. would have considered 将会考虑到
9. unpredictable 不可预测的
10. nature 本质
11. tend to 易于
12. cut and dried 简洁的
13. substitute for 替代
14. imaginative 有想象力的
15. advisability 可行性
16. frown 不同意
17. inconclusive 非结论性的