Задание на дом № 2

XVII. Употребите вместо пропусков слова из лексического
минимума в соответствующей форме (письменно).

1. Some crops are not harvested but … …, increasing soil fertility. 2.

all crops belonging to the grass family have … roots. 3. Potatoes are cultivated during their growth:, and are known as a …crop.4. Grasses grown for grain belong to … crops. 5. Bacteria living on the roots of.... crops fix... from the soil air. 6. Soybeans are the crop having the highest protein... of all farm crops grown. 7. Sugarbeets do not... to the grass family. 8. Grain may be …either as human food or as feed for livestock. 9. Clover is a... plant, producing seed for more than two seasons.

XVIII. Выберите подходящее по смыслу причастие. Переведите предложения (устно):

1. In our region there are some collective farms (grown, growing) wheat. 2. These are the crops (grown, growing) by our farm at present. 3. Small grains are the crops (harvesting, harvested) with combines. 4. This crop will grow well on soil (supplying, supplied) with nitrogen. 5. The environmental conditions (required, requiring) by crops for their best development should be favourable. 6. Crops such as wheat, oats, rye and barley are the ones (required, requiring) relatively cool conditi­ons for their growth. 7. Humidity is one of the most important factors (influenced, influencing) the crop growth. 8. Plants (producing, produ­ced) flowers and fruit when days are short are known as short-day plants. 9. The crops (including, included) in the grass family are all cereals and most of forage grasses.

XIX. Переведите на английский язык (письменно):

а) 1. Имеются пропашные и непропашные культуры. 2. Кукуруза растет в течение одного сезона. 3. Двулетние культуры не производят семена в первый год. 4. Кормовые культуры выращиваются как корм для скота. 5. Выращивая бобовые, мы можем повысить плодородие почвы. 6. Азот фиксируется бобовыми культурами.

б) 1. По продолжительности роста культуры классифицируются как однолетние, двулетние и многолетние. 2. Зерновые куль-
туры, принадлежащие к семейству Злаковых, являются ведущими пищевыми культурами. 3. Сходство частей растений используется как основа для ботанической классификации. 4. Азот фиксируется клубеньковыми бактериями, живущими на корнях бобовых. 5. Когда растительные остатки бобовых запахиваются, они повышают плодородие почвы. 6. Злаковые отличаются от бобовых видом корней.

XX. Выполните лабораторную работу № 2.

XXI. Проверка домашнего задания.

XXII.Переведите следующие группы слов (устно):

an important branch of economy, new and improved varieties, cul­tural practices, from the same area, control of pests and diseases, the only method used, seedbed preparation, achievements of biological sci­ences, practical experience, favourable environmental conditions, un­der warm conditions, growing season, frost-free period, average annual rainfall, world's leading cereal crops, cultivated crops, large-seeded le­gumes, plant residues, protein content, fibrous and tap roots.

XXIII. Определите функцию слов с окончанием ed. Переведите предложения (устно):

1. The methods of yield increases used are effective. 2. The met­hods of yield increases used on our farm are highly effective. 3. The methods of yield increases are effectively used on most of our farms. 4. The improved methods of yield increases have been developed and are now being used on our collective farms. 5. Last year the collective farmers of the farm "Zarya" used new methods of yield increases. 6. The soil analysed contained much nitrogen.

XXIV.Ответьте на следующие вопросы к тексту А (устно):

1. How can farm crops be classified? 2. What is an annual plant? 3. How long do biennial plants grow? 4. What are the most important botanical families? 5. What family does wheat belong to? 6. What other cereals belong to the grass family? 7. Do forage crops also belong to the grass family? 8. What roots have grasses (legumes)? 9. Why are legumes so important? 10. What large-seeded legumes do you know?

XXV.Прочтите текст В, не пользуясь словарем, и скажите, какие культуры приводятся автором в качестве примеров озимых и яровых однолетних культур, двулетних культур и многолетних
злаков.

Text В

Life Cycle

According to their life cycle plants are classified as annuals, bienni­als and perennials. The life cycle of a plant includes all the phases of plant growth starting with a seed. Many important crop plants complete their life cycle in one growing season. Such plants are known as annu­als.

Some annuals are spring annuals planted in spring and harvested in autumn. There are also winter annuals planted in autumn and harvested next summer. Winter wheat is an example of a winter annual and corn is a typical spring annual. Some plants complete their life cycle in two seasons. During the first season stems and roots are produced. Se­cond-year plants produce flowers, fruit and seed and at the end of the second season they die. Beet is a good example of a biennial plant. People use roots of biennial plants and harvest root crops at the end of the first season. Many plants live for more than two seasons, such plants are known as perennials. They produce seed every year. After seeds have been produced, the plants do not die. They are not active during winter, but in spring they produce new growth. Many of our hay and pasture crops are perennials. The examples of perennial crops are alfalfa and clovers.

XXVI. Прочтите текст еще раз. Разделите его на 4 абзаца и озаглавьте каждый из них по-русски (по-английски).

LESSON 4

ГРАММАТИКА И ЛЕКСИКА:

1. Герундий.

2. Отглагольное существительное.

3. Значения like, unlike.

4. Значения for.

5. Конверсия.

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