50 . образец выполнения the pharmacopoeia is a book containing a list of medicinal substances with description, tests and formulas for preparing them. containing- participle i, определение the pharmacopoeia describes also the proper method of packaging and storing. the drug. packaging, storing - gerund, определение в следующих предложениях подчеркните слова с суффиксом -ing и определите, являются они participle i, gerund (см. образец выполнения ). 1. salts containing hydrogen or hydroxide radicals are known to be acids or basic salts. 2. examining the structure of the fruit we determined its principle parts. 3. there are many ways of solving the problem.

The spirit of London
1.Visitors can appreciate the contrast between past and present of London .
2.The transformations of old buildings and rediscovery of the city river .
3.To explore and observe historical delights or walk through the ages of The City of Londin the visitors can go on foot .
4.London is not a historical theme park. It is a lively and exciting metropolis with it expensive restaurants , unique boutiques and exclusive department stores .
5.Soho is the city's liveliest and the most bohemian area in London .
Despite its heavy traffic and shaking underground railway, it is still one of the world's greatest and most cosmopolitan cities.

In Russia, the law of June 1, 1882, banned to work children under 12 years old, and for children 12-15 years limited the work time by 8 hours a day (though not more than 4 hours without a break). It also prohibited night ( from 9 pm to 5 am) and Sunday work, as well as prohibited the use of children's labour in harmful industries. Business owners were required to "allow" children who did not have a certificate of completion of at least a class of public school or similar educational institution to attend school for at least 3 hours a day or 18 hours a week.

В России закон от 1 июня 1882, запретил работать детям в возрасте до 12 лет, а для детей 12-15 лет ограничивал время работы 8 часами в день (притом не более 4 часов без перерыва) и запрещал ночные смены ( с 9 вечера до 5 утра) и воскресную работу, а также запрещал применение детского труда во вредных производствах. Владельцы предприятий обязаны были "разрешать" детям, не имеющим свидетельства об окончании хотя бы одного класса государственной школы или аналогичного учебного заведения, посещать школу не менее 3 часов в день или 18 часов в неделю.