28. Укажите, какие предложения соответствуют содержанию текста.
Подтвердите свои ответы фактами из текста.
1. Anthracite coals may be divided into lignite and common
brown coal.
2. Coals are ranked according to the percentage of carbon they
contain.
3. Peat, with the least amount of carbon is the lowest rank, then
comes lignite or brown coal.
4. Brown coal is hard and it is not liable to spontaneous combus­
tion.
5. Bituminous coal weathers rapidly and one cannot keep it in
open piles.
6. Being intensively used in the Iron and steel industry bitumi­
nous coal varies from medium to high rank.
7. Anthracite or hard coal, the highest in percentage of carbon,
can be blended with bituminous grades of coal.

In today's world we encounter the technology at every step and everyone uses them. I think that technology makes our lives easier. Because we depend on them.Firstly, electronic gadgets make it easy to search for information,  for saving our time. For example, when we were leaving somewhere, we use the navigator to avoid getting lost in an unfamiliar place.Secondly, the technology enables us to communicate with each other at any distance. For example, e-mail allows us to quickly and cheaply send SMS to every corner of the earth. In addition, thanks to the Skype we can call anywhere and even see companion.On the other hand technology is not very safe and secure. They are often broken, can be lost or stolen.In conclusion, I want to say that technology is very important to us, so we must learn to master them.  It will be useful in the future.

Dear Jean,
School has started but i have already miss summer very much. I did not guess that i would miss my new friends from my summer camp so much! I am go to school every day and see my best friends there, it is very interesting, i have an amazing time, spending it with them, but i still believe that my summer was better for me,
By the way i learned a lot of interesting at school. I read your letter about your summer holidays and your travelling to Egept, it was really fascinating to know about your rest. Besides you told me about your problems at school.(надеюсь ничего, если вставила лишнее предложение иначе последующие кажутся нелогичными)I can help you with it with great pleasure. 
What else i can say... I knew that you would ask me about my holidays, so i can send you some photo if you want, I think it will be very fun to spend next holidays together. And what about you?