Нужго вставить то что правильно .

Parental control of the child's actions on the Internet is undoubtedly necessary, but he does not guarantee the result at all. On the one hand, if a child, especially a sufficiently conscious age, or even more so a teenager decides to get some information, the presence of restrictors on his devices will not change anything. There is always a friend's smartphone or neighbor's computer, and traditional channels of information transmission have not gone away - conversations with peers. On the other hand, parental control helps to protect children from accidental access to unnecessary information.

One can argue long about the age and what the child should know, but the ease with which the Internet carries us, often in addition to will, to resources with contentious content, still stimulates parents and guardians to take certain actions.

The ability to determine the boundaries for which a child does not need to go online is the second aspect of parental control. For some it will be sex and violence in any manifestation (then, however, it will be necessary to avoid even billboards in the city), someone will want to shield the child from information about the existence of drugs and abortions. The more flexible the system that allows you to restrict access to content, the better.

Parental control can be divided into different groups depending on the platform on which they are used (computer, smartphone, tablet), and the "depth" of the impact on the work on the web. The most soft can be considered various settings of search engines and browsers, while the hard-coded filtering on your Internet router, most likely, the child will not be able to get around.

1.This declaration was adopted on December 10, 1948. The author of this document is John Humphrey, René Cassin, and others. The Second World War clearly demonstrated that humanity needs rights. And the adoption of this setting gave a serious impetus to the development of human rights, as a necessary condition for peace.
2.A person who does not know his history and the history of his native country can not have a future.The war has long ended, but this does not mean that we must forget about it. What our grandfathers and great-grandfathers did for our peaceful life, grandmothers and great-grandmothers simply admire. However, many have not returned from the war. In order to honor them, we must always remember the feat done by incredible people. But there is another reason for which we can not forget about the war. Flipping through the pages of history, our main task is to learn from the mistakes made by people who lived centuries before us. Learning for a mistake, we guard ourselves against meaningless wars and revolutions, save our lives, filling their joy and meaning. Unfortunately, I do not understand everything, not everyone knows, not everyone remembers the war that went down in history as the "Great War".
3. (не знаю)