Вариант № 1 Задание 1. Прочитайте, перепишите, используя нужную форму при¬частия, образованную от глагола в скобках. Переведите предложения на русский язык.
1. The geologists (to work) in the Par East found extensive reserves of natural minerals.
2. The letter (to write ) was addressed to the USA.
3. (to have mixed) these two substances we put the mixture into the glass.

Задание 2. Прочитайте предложения, определите функции причас¬тий. Переведите предложения на русский язык.
1. Students are given every opportunity to acquire knowledge in different branches of science.
2. The information mentioned above is of great interest.
3. We use many electronic machines performing very complicated calculations.

Задание З. Прочитайте предложения, переведите письменно и укажите, в каком предложении использован независимый причастный оборот.
1. The experiment being very interesting we decided to analyze it.
2. Unless carrying out the experiment, the scientist noticed that the substance was solid.
3. Having been heated for several hours the substance began to melt.

Задание 4. Прочитайте и переведите письменно следующий текст.

Metals
In general metals are solids with a metallic lustre, conduc¬tors of electricity, malleable, and of high physical strength. In compound form, the metals have positive valences. Probably, their most important characteristic is that when used as a metal they are usually in elemental form or alloyed with other metals.
The metals long used by mankind – iron, copper, zinc, titian lead, mercury, silver and gold – are those which exist as easily recognized minerals in large deposits and which are easily reduced from compounds to elemental forms.
The most important metal, iron, is both prevalent and easily v reduced to metallic form. In more recent times some of the most naturally prevalent metals that are difficult to reduce have become common and readily available due to the development of electrochemical processed for their production. These include aluminium, magnesium and sodium.
The metals occur most commonly as oxides or sulphides in ores that contain such materials as clay, silica, granite, etc. from which the metal compounds must be separated.
Since only a few of the metals, such as copper, gold, silver, platinum and bismuth, exist in elemental form, the chief problem is that of reducing them from compound to elemental form.

Задание 5. Исправьте предложения на основе текста.
1. The metals enn't occur aa aulphldfin in oro, platinum and bismuth existing in pure form.
2. Zink and copper axe hardly recognized minerals.
3. Gold can be used alloyed with other metals.

Задание 6. ответьте на вопросы письменно.
1. What metals exist naturally in elemental form?
2. What metals have long been used by mankind?
3. What metals have become common in more recent years?

Задание 7. Переведите письменно на английский язык, используяя текст.
1. Что ты знаешь о металлах, используемых в промышленности?
2. Металлы, существующие в злементарн0й форме - медь, золото, серебро, платина.
3. Такие металлы, как железо, медь, цинк были использованы человечеством.