Контрольная работа по английскому языку на тему: "Укажите в каждом предложении Conditional (I,II,III), предложения переведите"

КОНТРОЛЬНАЯ РАБОТА №4
ВАРИАНТ I

1.Укажите в каждом предложении Conditional (I,II,III), предложения переведите.
1. If I had known who was invited, I would have never come. Conditional III Если бы я знал, кто
приглашен, я бы никогда не пришел.
2. You would hardly recognize her if you met her. Conditional II Вы вряд ли узнали бы ее, если бы
встретили.
3. I will eat something sweet, if you buy it for me. Conditional I Я съем что-нибудь сладкое, если вы
купите это для меня.
4. Mother would have had a short rest if the sick boy had gone to sleep. Conditional III Мать отдохнула
бы немного, если бы больной мальчик уснул.
5. We wouldn't have made friends with them if we hadn't stayed at the same hotel. Conditional III Мы бы
не подружились с ними, если бы не остановились в одной гостинице.
2.Раскройте скобки, поставив глаголы в Conditional.
1. She would have noticed this mistake if she had been more attentive.
2. If you put salt on ice, it will melt.
3. If we had known that you were there, we would have called on you.
4. If I had known of his arrival, I would have met him.
5. She would play tennis if it were not so hot.
3.Прочитайте и устно переведите текст.

Water Purification

1 The abundance of water in liquid, solid and gaseous state is a matter of common observation1. Not only is
water the most abundant, compound, but it is also very important for life. To be sure life would be impossible
without water.
2 From the chemical point of view water has many points of interest, for it enters into chemical reactions
which are of fundamental importance. Not only does water react with many substances, but it has also a marked
influence upon many chemical reactions.
3 For many purposes it is desirable that water should be pure. The purest natural water is rain. It would be
wrong, however, to consider it as being really pure. Nor is ground water pure. It contains a great deal of impurities
which fail to settle. Dissolved substances do not settle, nor do they evaporate with water, which makes their removal
difficult.
4 One of the most important problems is to obtain water sufficiently pure to meet our needs. The choice as to
what process is to be used for purification of water depends upon the uses for which it is intended as well as the
impurities it contains. If water were used for steam boilers it should be free from substances that cause corrosion and
scale formation. Water for washing should not contain substances that react with soap. When water is to be used for
drinking it is necessary that the microbes which it may contain should be killed. To achieve this, water which is to
be purified is thoroughly filtered. Another way to purify water is to boil it.
5 None of these methods is fit for producing pure water in the chemical sense, since most of the soluble salts
are unaffected by the treatment. To remove these and to prepare chemically pure water suitable for scientific use, we
take advantage of the fact that water is easily changed to steam while most of the dissolved substances as already
mentioned are not volatile. By condensing the steam, we are thus able to remove all the impurities except volatile
ones. This process is called distillation. Distilled water has many uses, both in the laboratory and in industry, when
even small quantities of impurities would be undesirable.