保护知识产权，对( )和优化创新环境具有十分重要的意义，也有利于减少与国外的知识产

根据过滤介质截留的物质颗粒大小的不同，过滤可分为粗滤、（）、超滤和（）四大类。

有不少成语与我国省级行政区的简称有关，“得陇望蜀”中包含哪几个省级行政单位？

A．宁夏、四川

B．甘肃、四川

C．河南、江苏

D．宁夏、陕西

In some countries where racial prejudice is acute, violence has so come to be taken for granted as a means of solving differences that it is not even questioned. There are countries where the white man imposes his rule by brute force; there are countries where the black man protests by setting fire to cities. Important people on both sides, who would in other respects appear to be reasonable men, get up and calmly argue in favor of violence--- as if it were a legitimate solution, like any other. What is really frightening, what really fills you with despair, is the realization that when it comes to the crunch（关键时刻）, we have made no actual progress at all. We may wear collars and ties instead of war-paint, but our instinct remain basically unchanged. The whole of the recorded history of the human race, that tedious documentation of violence, has taught us absolutely nothing. We have still not learned that violence never solves a problem but makes it even acute. The sheer horror, the bloodshed（流血）, the suffering mean nothing. No solution ever comes to light the morning after when we dismally contemplate the smoking ruins and wonder what hit us.

The truly reasonable men who know where the solutions lie are finding it harder and harder to get a hearing. They are despised, mistrusted and even persuaded by their own kind because they advocate such apparently outrageous things as law enforcement（执行）. If half the energy that goes into violent acts were put to good use, if our efforts were directed at cleaning up the slums and ghettos, at improving living standards and providing education and employment for all, we would have gone a long way to arriving at a solution. Our strength is sapped by having to mop up the mess that violence leaves in its wake. In a well-directed effort, it would not be impossible to fulfill the ideals of a stable social programme. The benefits that can be derived from constructive solutions are everywhere apparent in the world around us. Genuine and lasting solutions are always possible, providing we work within the framework of the law.

72. What is the best title for this passage?

A. Advocating Violence.            

B. Violence Can Do Nothing to Diminish Race Prejudice

C. Violence as a Legitimate Solution  

D. Violence: The Instinct of Human Race

73. Recorded history has taught us __________.

A. violence never solves anything   B. nothing

C. the bloodshed means nothing     D. everything

74. It can be inferred that truly reasonable men ________.

A. can’t get a hearing   B. are looked down upon 

C. are persecuted      D. have difficulty in advocating law enforcement

75. According to the author, the best way to solve race prejudice is ________.

A. law enforcement   B. knowledge  C. nonviolence   D. mopping up the violent mess

______服务是最重要与最基本的网络服务功能。

在视图选项中，可以设置（）

A.是否显示网格线

B.是否显示工作表标签

C.是否显示滚动条

D.是否显示行号列标