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新视野大学英语读写教程听力 第三册 te-unit08-b
日期:2012-05-06

[05:31.56]Or consider an example raised by Judge Richard Posner:
[05:37.93]a couple in which the husband has some unfortunate genetic defect.
[05:44.81]Currently, if this couple wants a genetically related child,
[05:51.97]they have four not altogether pleasant options.
[05:56.76]They can reproduce naturally and resign
[06:00.50]themselves to the risk of passing on the disease to the child.
[06:05.87]They can go to a sperm bank and take a chance on unknown genes.
[06:13.54]They can bring egg and sperm together artificially
[06:19.91]and dispose of any affected baby
[06:23.04]before placing it in the mother,
[06:25.31]or before birth — though that might be objectionable, too.
[06:30.17]Or they can get a male relative of the father
[06:35.24]to be a sperm donor, if such a relative exists.
[06:35.25]This is one ease where even people bothered by creating a child
[06:42.48]under the lens of a microscope might cloning
[06:46.23] as not the worst option.
[06:49.83]6  Even if human cloning offers no obvious benefits to mankind,
[06:56.85]why ban it?
[06:58.79]In a democracy we don't usually pass laws against something
[07:05.16]before there is actual or probable evidence of harm.
[07:10.13]Before we go any further,
[07:09.13]it might make sense to require a temporary pause
[07:12.98]on research into human cloning in order to make a systematic enquiry
[07:19.25]into the grave questions it raises.
[07:22.52]When research into cloning is resumed,
[07:28.07]human cloning should remain a research activity for an extended period.
[07:34.33]And if it is ever attempted,
[07:38.11]it should — and no doubt will — take place only under careful examination
[07:45.06]and layers of legal administration.
[07:48.80]Most important, human cloning should be governed by the same laws
[07:55.82]that now protect human rights.
[07:59.35]A world not safe for cloned humans
[08:04.00]would be a world not safe for the rest of us.

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