[听力原文] ？？人对颜色的感觉不一样。如果四周是红色、黄色或者光线特别亮，人就会

For me, scientific knowledge is divided into mathematical sciences, natural sciences or sciences dealing with the natural world (physical and biological sciences), and sciences dealing with mankind (psychology, sociology, all the sciences of cultural achievements, every kind of historical knowledge). Apart from these sciences is philosophy, about which we will talk later. In the first place, all this is pure of theoretical knowledge, sought only for the purpose of understanding, in order to fulfil the need to understand what is intrinsic and consubstantial to man. What distinguishes man from animal is that he knows and needs to know. If man did not know that the world existed, and that the world was of a certain kind, that he was in the world and that he himself was of a certain kind, he wouldn’t be man. The technical aspects or applications of knowledge are equally necessary for man and are of the greatest importance because they also contribute to defining him as man and permit him to pursue a life increasingly more truly human.

But even while enjoying the results of technical progress, he must defend the primacy and autonomy of pure knowledge. Knowledge sought directly for its practical applications will have immediate and foreseeable success, but not the kind of important result whose revolutionary scope is in large part unforeseen, except by the imagination of the Utopians. Let me recall a well-known example. If the Greek mathematicians had not applied themselves to the investigation of conic sections, zealously and without the least suspicion that it might someday be useful, it would not have been possible centuries later to navigate far from shore. The first man to study nature of electricity could not imagine that’ their experiments, carried on because of mere intellectual curiosity, would eventually lead to modern electrical technology, without which we can scarcely conceive of contemporary life. Pure knowledge is valuable for its own sake, because the human spirit cannot resign itself to ignorance. But, in addition, it is the foundation for practical results that would not have been reached if this knowledge had not been sought disinterestedly.

In the paragraph that follows this passage, we may expect the author to discuss().

A.unforeseen discoveries

B.philosophy

C.the value of pure research

D.the value of technical research

历史的人要办历史的事，既不要超越历史，去干那些办不到的事情；也不要推卸历史的责任，该干的事情也不去办。 对这句话理解正确的是(　)

A．办历史的事要量力而为

B．办事要对历史负责

C．办历史的事反对冒进

D．要经得起历史的考验

下列内部控制要素中，管理当局的观念和经营风格属于：

A．控制环境

B．控制活动

C．信息与沟通

D．监督

系统抖动是指：

A．使用机器时，屏幕闪烁的现象

B．系统盘有问题，致使系统不稳定的现象

C．被调出的页面又立刻被调入所形成的频繁调入调出的现象

D．由于内存分配不当，偶然造成内存不够的现象