The рroper function of this system is perhaps the most important one in the sustaining of life

1 моему маленькому брату 5 лет
я буду свободен завтра
вы ходили вчера в кино?
вы нашли свою книгу вчера ?
кто из вас слушает радио?

2. I...never been to the USA.

a.to have been cleaned
b.cleaning
c.being cleaned
2.I'll never forget ........... you. It was the most important day in my life.
a.to have met
b.having met
c.meeting
3.He was made ..... at home.
a.stay
b. to stay
c.staying
4. My parents are used to .... in the countryside.
a.to live
b. living
c. to have lived
5.My father is thinking of .... a car.
a. buy
b.to go
c.buying
6. I'm having difficulty in ....... at night.
a. sleeping
b. to sleep
c. sleep
7. I remembered .... the door before I left home but I forgot to shut the windows.
a. locking
b.having locked
c. to lock

“far,” and phone, meaning "sound," and refers to a telecommunications device that allows the human voice to travel across great distances. There are different types of telephones and corresponding types of telephone systems. The three main types of telephone systems are Plain Old Telephone Service, cellular wireless phones, and Internet
Protocol phones.
Landline telephone systems are part of the Plain Old Telephone Service (POTS), the analog service with copper wiring that is the direct great-grand-baby of the original telephone system courtesy of Alexander Graham Bell. The advantages include standardized equipment, predictable sound quality, and — due to direct connections to the central office of the company — no need to share the system’s capacity with
others. Because switches are in place, creating a private circuit for each phone call, it is also called the Public Switched Telephone Network (PSTN). A new-fangled term, given the recent alternatives, is “landlines.”
Another of the types of telephone systems is for cellular wireless phones, with individual companies having their own networks with varying technology. Like POTS systems, cellular wireless telephone systems are full-duplex systems, meaning that both people on the call can talk at the same time, but cell phones use radio frequencies, rather than copper wire. Though cellular networks began as mobile voice networks only, they now carry both voice and data. Some networks are national,
while others are international, and new technologies are continually in development. The networks known as 3G support not only cell phones, but also netbook computers, smartphones, and wireless modem aircards.
Internet Protocol (IP) telephone systems, also called Voice over Internet Protocol (VoIP), are another group of the telephone systems that are in use in the 21st century. This type of telephone service piggy-backs on existing Internet service, either cable service or DSL broadband. A device called an Analog Telephone Adaptor is the go between that connects whatever phone you happen to have with either your broadband modem – or your router, if you have one.
IP systems can be set up with a single line for both Internet and telephone service, which can save money.
With an Integrated T1 line, instead of being set up for voice, on the one hand, or data, on the other, the T1 line is able to handle both. With Dynamic T1, the line is capable of assigning bandwidth as needed, given the current use.

from birds to humans easily, the severity of the infection of H5N1 in humans is frightening. The virus has killed every second person infected by it. These cases were reported in perfectly healthy individuals who had no past history of infections. However the greater concern for the world is the POSSIBILITY THAT THE VIRUS MAY MUTATE (UNDERGO ANTIGENIC SHIFT) AND CREATE A FORM THAT MAY SPREAD FROM HUMAN TO HUMAN. Such a strain of virus may result in a pandemic, killing millions of people worldwide.

Is Consumption Of Poultry Birds Safe?

Yes, it is safe to consume THOROUGHLY COOKED poultry products. The H5N1 virus is sensitive to heat and gets destroyed by normal cooking temperatures of 70- 100 degree Celsius. If meat from poultry birds and eggs are cooked properly, the virus will be destroyed. Just make sure that no part of the meat remains raw or uncooked.

How Big Is The Risk Of A Pandemic Breaking Out?

The world had to face a Bird Flu Pandemic, thrice in the twentieth century. In 1918-1919, "Spanish Flu" killed anywhere between 20 million to 50 million people (exact figures not known), including half a million in the United States alone. The "Asian flu" in 1957-58 killed 70,000 in the United States and in 1968-1969, the "Hong Kong flu" killed 34,000 in the USA.

Currently the risk of H5N1 strain leading to a Pandemic is high. The virus is spreading fast to new areas and the efforts made to curtail it have proved inadequate.

Domestic ducks have now become a "reservoir" for the virus. They are acting like a carrier for the virus - their bodies carry the virus without showing signs of any infection. Infected ducks then release large quantities of the virus in pathogenic form in their excretions spreading the virus to other birds or humans. This has made detection of the virus difficult especially in rural areas.

According to health experts, the virus has already met the first two prerequisites for starting a pandemic. First it has attained a form, for which humans have no inbuilt immunity; and second, it has proved pathogenic enough to cause serious illness and death in humans.

The present risk of a pandemic is very high. The only factor that has prevented a pandemic so far is that the virus has not mutated into a form that would allow it to transmit efficiently from one human to another. Once such a genetic change takes place for the virus, a pandemic will be inevitable. The first signs of such a reassortment will be presence of the clusters of patients with flu symptoms, closely related - both in time and space. This would be a clear indication of virus having the ability to transmit from human-to-human.

Currently no vaccine has been developed for fighting H5N1 strain. Simultaneous work is being done in many countries for developing a vaccine, but no success has been achieved. The exact virus that may cause the pandemic cannot be predetermined. Thus mass production of vaccine before the pandemic starts is ruled out. The worldwide manufacturing capacity is inadequate to match the sudden demand surge during a pandemic. The best that scientists can do is to carry out a study and determine the smallest amount of antigen per dose that will provide sufficient protection and thus maximise the number of vaccines produced.

What Are The Precautions Necessary To Prevent A Pandemic?

The logical first step is to control the disease from spreading among birds, but this seems a difficult task now. Bird Flu has become a bird epidemic in many parts of Asia and is spreading fast.

The Next step is to prevent the disease from getting passed on to humans. People who come in close contact with birds (like poultry farmers) are advised to keep a close watch on the health of birds, notify any sort of sickness in birds to the health authorities and avoid direct contact with sick birds in all cases. (Ducks have become a reservoir for the virus and may not exhibit signs of sickness even if they are carrying the virus.)

In case the flu becomes a pandemic, most countries of the world will be affected. In such a scenario, the best preventive measures would be personal hygiene, avoiding crowded places and staying away from raw meat and eggs.

A flu shot does not prevent bird flu, but it can protect a person from other forms of flu and avoid complications. Persons above 65 years of age, children, health services workers, people with chronic respiratory disorders, travellers to flu affected countries and pregnant women may consult a doctor regarding flu vaccination.

gh) in Moscow? 5. Mary is a (good) student than Lucy. 6. The Alps are (high) than the Urals. 7. This garden is the (beautiful) in our town. 8. She speaks Italian (good) than English. 9. Is the word «newspaper» (long) than the word «book»? 10. The Thames is (short) than the Volga. 11. The Arctic Ocean is (cold) than the Indian Ocean. 12. Chinese is (difficult) than English. 13. Spanish is (easy) than German. 14. She is not so (busy) as I am. 15. It is as (cold) today as it was yesterday. 16. She is not so (fond) of sports as my brother is. 17. Today the weather is (cold) than it was yesterday. 18. This book is (interesting) of all I have read this year. 19. January is the (cold) month of the year. 20. My sister speaks English (bad) than I do. 21. Which is the (hot) month of the year? 22. Which is the (beautiful) place in this part of the country? 23. This nice-looking girl is the (good) student in our group.рой скобки употребляя требующую форму прилагательного