The only solid piece of scientific truth about which I feel totally confident is that we are profoundly ignorant about nature. Indeed, I regard this as the major discovery of the past hundred years of biology. It is, in its way, an illumination piece of news. It would have amazed the brightest minds of the 18th century Enlightenment (启蒙运动) to be told by any of us how little we know and how bewildering seems the way ahead. It is this sudden confrontation with the depth and scope of ignorance that represents the most significant contribution of the 20th century science to the human intellect. In earlier times, we either pretended to understand how things worked or ignored the problem, or simply made up stories to fill the gaps. Now that we have begun exploring in earnest, we are getting glimpses of how huge the questions are, and how far from being answered. Because of this, we are depressed. It is not so bad being ignorant if you are totally ignorant; the hard thing is knowing in some detail the reality of ignorance, the worst spots and here and there the not-so-bad spots, but no true light at the end of the tunnel nor even any tunnels that can yet be trusted.
But we are making a beginning, and there ought to be some satisfaction. There are probably no questions we can think up that can’t be answered, sooner or later, including even the matter of consciousness. To be sure, there may well be questions we can’t think up, ever, and therefore limits to the reach of human intellect, but that is another matter. Within our limits, we should be able to work our way through to all our answers, if we keep at it long enough, and pay attention.
第11题:According to the author, really good science ________.
A) would surprise the brightest minds of the 18th century Enlightenment
B) will produce results which cannot be foreseen
C) will help people to make the right choice in advance
D) will bring about disturbing results
第3题
A.化学纤维以天然或人工合成的高聚物为原料,经特定的加工制成。
B.再生纤维(人造纤维)以天然高聚物为原料,经特定的加工制成。
C.合成纤维以人工合成的高聚物为原料,经特定的加工制成。
D.天然纤维是指在自然界中生长形成或与其他自然界物质共生在一起,可直接用于纺织加工的纤维。
第5题
人造奶油是以()为主要原料,添加适量的牛乳或乳制品、香料、乳化剂等,经混合、乳化等工序而制成的。
A.牛油
B.猪油
C.天然黄油
D.氢化油
第6题
人造奶油是以氢化油为主要原料,添加适量的牛乳或乳制品、香料、乳化剂等,经()等工序而制成的。
A.混合、焦化
B.搅拌、提炼
C.提炼、焦化
D.混合、乳化
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