VPN是一种架构在公用通信基础设施上的专用通信网络。

位于额中回后部的是（）

A.听区

B.视区

C.书写语言中枢

D.听觉语言中枢

E.运动语言中枢

沿运动场一直线跑道从一端到另一端，每隔4米打1根柱子，一共打有25根桩子，现改为每隔6米打1根桩子，求可以不拔出来的桩子有几根( )

A．9
B．8
C．14
D．18

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 or theoretical knowledge, sought only for the purpose of understanding, in order to fulfill the need to understand that is intrinsic and con-substantial to man. What distinguishes man from animals 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, man 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 for the most 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 section 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 men to study the 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. Butt in addition, it is the foundation for practical results that would not have been reached if this knowledge had not been sought disinterestedly.

Notes: intrinsic 固有的。con-substantial 同体的。autonomy 自主性。zealously and without the least suspicion热情地并丝毫也没有想到。for the most part 大部分，主要地。Utopian乌托邦，理想主义。disinterestedly 不偏不倚地。resign oneself to 听任，顺从。

In the author’s view, the Greeks who studied conic sections（）

A. were mathematicians

B. worked with electricity

C. were interested in navigation

D. were unaware of the value of their studies

内地某企业出口一批货物(检验检疫类别为M/N)，拟由上海口岸报关出口。经产地检验检疫机构检验不合格，该企业对检验结果有异议。以下表述错误的是______。

A．企业可向上海检验检疫机构申请复验
B．企业可向产地检验检疫机构申请复验
C．企业可向产地检验检疫机构的上级机构申请复验
D．企业可向国家质检总局申请复验

紧固互联