1. Of the cereal crops grown wheat, corn and rice are the three most important for man.
2. Biennials are plants growing for two years.
3. Similarity of plant parts is the basis used for botanical classification.
4. Growing forage crops, farmers not only increase soil fertility but also supply their animals with highly nutritious feed.
5. Gaseous nitrogen fixed by bacteria living in the roots of legumes increases nitrogen content of the soil.
6. Crops growing best under cool conditions, include wheat, oats, barley, rye and potatoes.
7. The farms obtaining high yields of potatoes every year are known to all agricultural specialists of our region.
8. Of the crops known as cultivated crops our farm grows corn and potatoes.
9. Classifying field crops according to their use, scientists name such groups as grain crops, root crops, forage crops, fiber crops and some others.
10. Completing their growth by the end of the first season, all annual plants die.
11. Almost all small-seeded legumes raised are used for hay on our farm.
12. Some crops are biennials starting their growth in one season and producing the seed in the second season.
11. Highlight in different colours and read aloud sentences containing the word ‘one’ with the following fuctions:
а) substitues a noun – yellow, b) is not translated being the subject of the sentence – green, в) is equivalent to the Russian numeral "one" – blue:
1. Temperature is one of the most important environmental factors affecting crop growth.
2. Botanical classification is the one based on the similarity of plants.
3. One can group plants according to the duration of their growth.
4. Most important field crops belong to the grass family and corn is one of them.
5. One can improve soil fertility by application of fertilizers.
6. Perennial crops are the ones that grow for more than two years.
7. Rainfall cannot be influenced by man, but one can grow crops by application of irrigation.
8. One should know the crops belonging to the grass family.
9. They use traditional cultural practices in corn production but we use the improved ones and obtain higher yields.
12. Highlight the words that substitute nou тыб translate the sentences :
1. The optimum temperature for cotton is higher than that for small grains.