A.无失真恢复数据、压缩比低B.无失真恢复数据、压缩比高C.有失真恢复数据、压缩比低D.有失真恢
A. 无失真恢复数据、压缩比低
B. 无失真恢复数据、压缩比高
C. 有失真恢复数据、压缩比低
D. 有失真恢复数据、压缩比高
I think it is true that parents often underestimate their teenager children and also forget how they themselves felt when young.
Young people often irritate their patents with their choices in clothes and hairstyles, in entertainers and music. This is not their motive. They feel cut off from the adult world into which they have not yet been accepted. So they create a culture and society of their own. Then, if it turns out that their music or entertainers or vocabulary or clothes or hairstyles irritate their parents, this gives them additional enjoyment. They feel they are superior, at least in a small way, and that they are leaders in style. and taste.
Sometimes you are resistant and proud because you do not want your parents to approve of what you do. If they did approve, it looks as if you are betraying your own age group. But in that case, you are assuming that you are the underdog (失败者) : you can' t win but at least you can keep your honor. This is a passive way of looking at things. It is natural enough after long years of child hood, when you were completely under your parents' control. But it ignores the fact that you are now beginning to be responsible for yourself.
If you plan to control your life, co-operation can be part of that plan. You can charm others, especially your parents, into doing things the way you want. You can impress others with your sense of responsibility and initiative, so that they will give you the authority to do what you want to do.
The author is primarily addressing ______.
A. parents of teenagers
B. newspaper readers
C. those who give advice to teenagers
D. children in their teens
Nowadays, we hear a lot about the growing threat of globalization, accompanied by those warnings that the rich pattern of local life is being undermined, and many dialects and traditions are becoming extinct. But stop and think for a moment about the many positive aspects that globalization is bringing. Read on and you are bound to feel comforted, ready to face the global future, which is surely inevitable now.
Consider the Internet, that prime example of our shrinking world. Leaving aside the all-to-familiar worries about pornography and political extremism, even the most narrow-minded must admit that the net offers immeasurable benefits, not just in terms of education, the sector for which it was originally designed, but more importantly on a global level, the spread of news and comment. It will be increasingly difficult for politicians to maintain their regimes of misinformation, as the oppressed will not only find support and comfort, but also be able to organize themselves more effectively.
MTV is another global provider that is often criticized for imposing popular culture on the unsuspecting millions around the world. Yet the viewers' judgment on MTV is undoubtedly positive; it is regarded as indispensable by most of the global teenage generation who watch it, a vital part of growing up. And in the final analysis, what harm can a few songs and videos cause?
Is the world dominance of brands like Nike and Coca-cola so bad for us, when all is said and done? Sportswear and soft drinks are harmless products when compared to the many other things that have been globally available for a longer period of time--heroin and cocaine, for example. In any case, just because Nike shoes and Coke cans are for sale, it doesn't mean you have to buy them--even globalization cannot deprive the individual of his free will.
Critics of globalization can stop issuing their doom and gloom statements. Life goes on, and has more to offer for many citizens' of the world than it did for their parents' generation.
Some people feel sad about globalization because they believe it will ______
A. bring threat to the world peace
B. impact the diversified local life
C. disrupt their present easy life-style
D. increase the size of people speaking dialects
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 shortly.
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 what is essential and substantial 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 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 of 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 independence 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 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 modem 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 author's opinion, ______.
A. both social and natural sciences are aimed at understanding only
B. both pure knowledge and its applications are equally essential to man
C. philosophy is totally independent of the sciences referred to in the text
D. the revolutionary results of pure science can hardly be imagined by Utopians