[单项选择] It is hard to predict how science is going to turn out, and if it is really good science it is impossible to predict. If the things to be found are actually new, they are by definition unknown in advance. You cannot make choices in this matter. You either have science or you don’’t, and if you have it you are obliged to accept the surprising and disturbing pieces of information, along with the neat and promptly useful bits. 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 illuminating 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 confusing seems the way ahead . It is this sudden confrontation (对抗) with the depth and scope of ignorance that represents the most significant contribution of 20th centu
A. man can find solutions sooner or later to whatever questions concerning nature he can think up
B. man can not solve all the problems he can think up because of the limits of human intellect
C. sooner or later man can think up all the questions concerning nature and answer them
D. questions concerning consciousness are outside the scope of scientific research