进一步强调并不是所有researches都是valuable 的,必须考虑到其所带来的效益是否损失,否则,是会导致灾难性连锁反应的。
在这里需要进一步指出的是,我们在平时练习的时候就要注意多多记住一些有用的数据和年代,这样会非常persuasive convincing啦。
The speakers assertion is troubling in two other respects as well. First, no amount of research can completely solve the enduring problems of war, poverty, and violence, for the reason that they stem from certain aspects of human naturesuch as aggression and greed. Although human genome research might eventually enable us to engineer away those undesirable aspects of our nature, in the meantime it is up to our economists, diplomats, social reformers, and juristsnot our research laboratoriesto mitigate these problems. Secondly, for every new research breakthrough that helps reduce human suffering is another that serves primarily to add to that suffering. For example, while some might argue that physics researchers who harnessed the power of the atom have provided us with an alternative source of energy and invaluable peace-keepers, this argument flies in the face of the hundreds of thousands of innocent people murdered and maimed by atomic blasts, and by nuclear meltdowns. And, in fulfilling the promise of better living through chemistry research has given us chemical weapons for human slaughter. In short, so-called advances that scientific research has brought about often amount to net losses for humanity.
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