I. Translate the following words bearing in mind the meaning of the affixes and memorize them:

1. to solve (v), solution (n), soluble (adj), solubility (n)

2. to solidify (v), solid (n), solidity (n), solidification (n)

3. to treat (v), treatment (n), treaty (n)

4. to dissect (v), dissection (n)

5. fortune (n), fortunate (adj), fortunately (ady), unfortunately (adv)

6. to relate (v)\ relation ((n), relationship (n), relativity"(n)

7. to accumulate (v), accumulator (n), accumulation (n)

8. to contain (v), container (n)

9. to compare (v)t comparison (n), comparative (adj), comрагаb1е (adj)

II. The Plural of nouns of Latin and Greek origin:

1. species — species вид, род, разновидность

2. analysis — analyses анализ

3. nucleus — nuclei ядро

4. stimulus — stimuli возбудитель, стимул

5. genus —genera род, сорт, вид

6. phenomenon — phenomena явление

7. datum — data данное

8. maximum — maxima максимальная величина

9. alga — algae водоросли (морские)

10. bacterium — bacteria бактерия

11. medium — media среда

12. stoma — stomata устьице

13. bacillus — bacilli бацилла

III. Form adjectives from the following nouns by adding the suffix “аl” and translate them into Russian:

Function, origin, condition, centre, structure, practice, logic, nature, evolution, addition

IV. Find the derivatives of the following words in the text and state what parts of speech they are:

Abundance, mysterious, attentive, microscopic, treatment, success, complication, solidity, exclude, fortune, exchange, usually, comparative .

V. Form adjectives from the following verbs by adding the suffix "able" and translate them into Russian:

To desire, to move, to manage, to consider, to distinguish, to compare, to favour, to. observe, to change.

VI. Form the plural of the following nouns:

Stimulus, nucleus, century, woman, goose, city, fish, toy, property, phenomenon, tooth, activity, genus, datum, nucleus, alga, bacterium, process, theory, box, medium, boundary.

VII. Form synonyms of the following words:

Research, substance, learn, to make up, to enter, certain, hard, enormous, to supply, rapid, occur, cause.

VIII. Translate the following sentences into Russian and substitute the Absolute Participle Construction by clauses and vice versa.

a) 1. The temperature and air conditions being favourable, the plant begins to grow. 2. The supply of food provided by wild plants and animals having become insufficient, primitive man began to grow plants. 3. Good storage conditions having been provided, the seeds retained their good quality %nd viability.

b) 1. After more favourable conditions had been created, the plants grew to a greater size. Nowadays people know a great number of plant species and the best known among them are the/most useful to man. 3. As the day was warm we decided to plant some fruit trees.