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TEXT B When a Scottish research team startled the world by revealing 3 months ago that it had cloned an adult sheep , President Clinton moved swiftly.Declaring that he was opposed to using this unusual animal husbandry technique to clone humans , he ordered that federal funds not be used for such an experiment—although no one had proposed to do so—and asked an independent panel of experts chaired by Princeton President Harold Shapiro to report back to the White House in 90 days with recommendations for a national policy on human cloning.That group—the National Bioethics Advisory Commission ( NBAC ) —has been working feverishly to put its wisdom on paper , and at a meeting on 17May , members agreed on a near - final draft of their recommendations. NBAC will ask that Clinton’s 90 - day ban on federal funds for human cloning be extended indefinitely , and possibly that it be made law.But NBAC members are planning to word the recommendation narrowly to avoid new restrictions on research that involves the cloning of human DNA or cells—routine in molecular biology.The panel has not yet reached agreement on a crucial question , however , whether to recommend legislation that would make it a crime for private funding to be used for human cloning. In a draft preface to the recommendations , discussed at the 17 May meeting , Shapiro suggested that the panel had found a broad consensus that it would be“morally unacceptable to attempt to create a human child by adult nuclear cloning.”Shapiro explained during the meeting that the moral doubt stems mainly from fears about the risk to the health of the child.The panel then informally accepted several general conclusions , although some details have not been settled. NBAC plans to call for a continued ban on federal government funding for any attempt to clone body cell nuclei to create a child.Because current federal law already forbids the use of federal funds to create embryos ( the earliest stage of human offspring before birth ) for research or to knowingly endanger an embryo’s life , NBAC will remain silent on embryo research. NBAC members also indicated that they will appeal to privately funded researchers and clinics not to try to clone humans by body cell nuclear transfer.But they were divided on whether to go further by calling for a federal law that would impose a complete ban on human cloning.Shapiro and most members favored an appeal for such legislation , but in a phone interview , he said this issue was still“up in the air.”
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【单选题】光学显微镜的分辨极限大约是什么 ?
A.
厘米级
B.
毫米级
C.
微米级
D.
纳米级
【多选题】为了保护个人电脑隐私,应该( )。
A.
删除来历不明文件
B.
使用“文件粉碎”功能删除文件
C.
废弃硬盘要进行特殊处理
D.
给个人电脑设置安全密码,避免让不信任的人使用你的电脑
【判断题】在平面四杆机构中,凡是能把转动运动转换成往复运动的机构,都有急回运动特性。
A.
正确
B.
错误
【单选题】普通光学显微镜的分辨极限是
A.
100nm
B.
200nm
C.
1nm
D.
2nm
E.
4nm
【单选题】为了保护个人电脑隐私,应该( )。
A.
删除来历不明文件
B.
废弃硬盘要进行特殊处理
C.
给个人电脑设置安全密码,避免让不信任的人使用自己的电脑
D.
都需要
【单选题】IBM在个人电脑上有2000多项专利,联想因收购了IBM的个人电脑业务,每年专利授权收入就达()。
A.
1000万美元
B.
2000万美元
C.
3000万美元
D.
4000万美元
【单选题】光学显微镜的分辨极限是 200 ( )
A.
微米
B.
纳米
C.
皮米
【多选题】为了保护个人电脑隐私,应该()。
A.
废弃硬盘要进行特殊处理
B.
使用“文件粉碎”功能删除文件
C.
给个人电脑设置安全密码,避免让不信任的人使用你的电脑
D.
删除来历不明文件
【单选题】普通光学显微镜的分辨极限是()。
A.
0.2纳米
B.
0.2微米
C.
0.2厘米
D.
0.2毫米
【单选题】普通光学显微镜的分辨极限是____。
A.
0.2纳米
B.
0.2微米
C.
0.2埃
D.
0.2毫米
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