2. Past or Present? Put am / is / are or was /were. 1. Last spring he a school student, now he in college.
2. WhereMike? - I don't know. Hein the cafe 5 minutes ago.
3. Yesterday Iat home. Iill.
4. How farthe college from your home? - Itnot too far. It takes me 15 minutes to get there.
5. Whereyou at 9.00 last Tuesday?
6. I like your new bag. How muchit?
7. The weatherso nice today, but yesterday it
rainy. Icompletely wet.
8. Ita public holiday two days ago. We went to the cinema.
The filmreally exciting.
3. Put was / were or wasn't / weren't:
1. Pete and Daniel at the seminar yesterday? -
Petethere but Daniel.
2. Where is my book? - I don't know. Iton the shelf,
but it isn't there now.
3.it difficult to make a report? - Oh, no, it
Itinteresting.
4. Where your last night? – I at the party
with my friends.
5. Why your father angry yesterday? - Because I___
late.
Archimedes. Why in the first place was the ancient Greek scientist? First of all, because he is one of the greatest mathematicians of all times, close he came to the calculation of the number of "PI". Today all students and students of the daily study and enjoy the discoveries of the Greek. Also Archimedes was famous for the invention of many useful machines. Among these are the siege guns, and mirrors, поджигающие sails on the Roman ships by focusing sunlight. Archimedes made the first theorist of mechanics. For example, he presented the complete theory of the lever, applying it in practice. Also, scientists have developed a Archimedes screw (screw), with the help of which вычерпывается water and the present day. The primacy of the inventor of merit - all of it was opened more than two thousand years ago, when there were no computers, no technology available today, the inventors. Archimedes, perhaps, he studied in the libraries of Alexandria, but most of his knowledge was acquired independently.