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.
Заполните пробелы отсутствующими словами в последующих предложениях, вам будет предоставлена первая буква каждого слова.
1) США ... от Атлантического океана на востоке до Тихого океана на западе. 2) США c ... четвертой по величине территорией в мире. 3) США ... Мексика на юге. 4) Мы должны упомянуть о ... стране. 5) Многие реки ... через страну. 6) Естественные каналы разрезаются на r 7) В США имеется обширная площадь ... почвы. 8) Он говорит по-испански, второй самый c ... язык в США. 9) Участок земли, установленный федеральным правительством для столицы страны, находится между штатами Виргиния и Мэриленд. 10) Есть тринадцать с ... на американском флаге.
2.Tom's dog
3. My mom's birthday
4.Students' notebooks
5. Alice's hat
6.Andy's umbrella
7.Diana's boots
8.Jane's glasses
9.Where did she meet her friend?
10.When is Tim read books?
11.Who went shopping last week?
12.What they will we watch TV?
13.does
14.do
15.do
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