The Library of Congress - United States National Library, the largest library in the world. Is the scientific library of the US Congress, serving government agencies, research institutions, private companies and industrial companies, schools. Located in three buildings in Washington. Its collections include more than thirty two million books and other printed materials in 470 different languages; more than sixty one million manuscripts; one million books world newspapers spanning the past three centuries; 500,000 microfilm and more
я несу большую сумку.я доставляю письма к людям домой.
Environmental pollution is one of the largest problems in our today’s world. It can be defined as a contamination of air, water and land from man-made waste. Nowadays there aren’t any cities and hardly any rural areas that remain clean and unpolluted.
There are a lot of different types of pollution among which the most recognized are air and water pollution, soil and radioactive contamination, littering, noise, light and thermal pollution. Unfortunately, most of the problems are the result of human activities. Indeed, the contradictions between man and nature are on a high level.
People cut down forests and thus damage thousands of acres of land. First of all, the soil can be easily blown away and secondly, even if new trees are planted, they can’t bring back the old forests that were a part of a complex ecosystem that cleaned the air and made home for wildlife.
Big industrial cities produce a lot of waste every day. It’s either thrown away or dug up which leads to the releasing of dangerous chemicals into the soil. Very often toxic or poisonous liquid chemicals are poured into the water therefore people’s health is put at risk. However, they are themselves responsible for this.
Water and air pollution are also a serious threat to our environment. The main factors contributing to them are car fumes, oil spills, throwing litter and many others. Polluted air and water affect people’s health to such an extent that millions of them have got no access to safe drinking water.
<span>In conclusion, it must be said that if we want to live in a better and healthier world we should take great care of our mother nature and learn to protect it.</span>
1. They did travel to Portugal last year.
2.I did not watch TV yesterday.
3.Sean and Mae travelled to London three days ago.
4.Sarah did visit her cousins yesterday morning.
5.Stella enjoyed the party last week.<u />
1) Am I a teacher? I am not a teacher.
2) Is my brother an artist? My brother is not an artist.
3) Is she a programmer? She is not a programmer.
4) Is he a reporter? He is not a reporter.
5) Are we managers? We are not managers.
6) Am I eager to see the world? I am not eager to see the world.
7) Is life hectic? Life is not hectic.
8) Are the shops closed today? The shops are not closed today.
9) Is Kate at home now? Kate is not at home now.
10) Am I a bus driver? I am not a bus driver.
11) Are my keys lost? My keys are not lost.
12) Are your children well? My children are not very well.
13) Are our students very good? Our students are not very good.
14) Is your job well-paid? My job is not well-paid.
15) Is the traffic heavy today? The traffic is not heavy today.
16) Are they Japanese? They are not Japanese.
17) Is Boris in Spain? Boris is not in Spain.
18) Is English difficult? English is not difficult.
19) Is Chinese easy? Chinese is not easy.
20) Are computers (very) useful? Computers are not very useful.
21) Is Robert a friendly boy? Robert is not a friendly boy.
22) Are your friends always helpful? My friends are not always helpful.