XV. Pay attention to the notes.

1. environment                      окружающая среда

2. lethal doses                  летальные дозы

3. ounce                            унция равная 28,3 г

4. laundry products             моющие средства

5. poison ivy                                 ядовитый плющ

6. stomachache       желудочная боль

7. tissue                          ткань

8. enzymes                             фермент

 

XVI. Find the sentences with the following words or word-combinations and translate them:

chemical compounds, stomachache, excessive, toxic substances, poisoning,

laundry products, damage. 

XVII. Read the following numerals:

         

    50-500 mg, 0, 00032 ounce, 98%, 50%

     1 mg, 1-50 mg, 5-15 g, 72%, 0,01.

 

XVIII. Fill in the gaps with the proper words and translate the sentences.

1. The human body is a complex system of chemical …. 

2. Sometimes chemicals, present in small ….

3. Toxic … can be classified into several categories.

4. There are two … of poisoning: chronic and acute poisoning.

5. Some plants contain corrosive …, e.g. poison ivy.

              (poisons, compounds, amount, types, substances)

 

XIX. Complete and translate the sentences.

1. The human body is a complex system ….

2. Everyone can remember the child who ate too much candy

(glucose) …

3. There is a wide variety of ways on which toxic … 

4. Thus action of toxic substances can be classified as corrosive,

metabolic, …

5. Toxic substances that react locally on tissues are …

6. Some corrosive poisons destroy tissue by ….

 

XX. Translate the sentences into English.

1. Человеческое тело – комплексная система химических

составляющих.

2. Летательные дозы обычно выражаются в миллиграммах.

3. Токсические вещества могут классифицироваться на 

несколько категорий.

4. Существуют 2 типа токсичности: хронический и острый.

5. Протеиновые структуры этих клеток разрушаются. 

 

 

XXI. Tick the sentences that are true and change the false ones.

1. Acute poisoning is often lethal in the absence of necessary

treatment.

2. One of the strongest toxic substances is cyanide.

3. The body cannot regulate the intake of various materials of the

environment.

4. Toxic substances react locally on tissues.

5. Not all people are susceptible to a poison.

6. The life of people is largely dependent upon the conditions of the environment.

 

XXII. Find in the text these facts.

1. The body of man or animal has mechanisms which regulate its

intake of materials.

2. Chemical substances affect the human body in different ways.

3. According to the effect on the body substances are classified into

several categories.

4. Not only chemical elements are considered as toxic.

 

XXIII. Answer the questions.

1. What substance do you consider the most toxic?

2. Our life depends on the conditions of man's environment. It this

right?

3. Do chemicals always affect the biological functions of the body?

4. What kind of poisoning occurs more often: chronic or acute?

5. Does death always result after intake of small amounts of toxic

substances?

 

XXIV. Divide the text into some parts.

XXV. Make up a plan of retelling.

XXVI. Retell the text.

Module “ Botany ”

Lesson I

Botany

Word formation: suffix -ness

Grammar: Perfect tense (Present, Past, Future)

Text: Botany

Assignments to do:

Remember: suffix -ness forms a noun

                ill- больной, illness-болезнь

                happy-счастливый, happiness-счастье

 

I. Form nouns with a help of the suffix- ness from the following adjectives.

white, dark, busy, bright, dry, sticky, bit, like, rude, tidy.

 

II. Translate the following nouns. Which words are they derived from?

coldness, unlikeness, nobleness, cleanness, cleverness, clearness, loveliness.

 

Remind Grammar (look at grammar reference).

III. Answer the question.

1. Which groups are all verbs divided into?

2. What are they?

3. How is Participle II formed from regular verbs?

4. Should we learn by heart Participle II from irregular verbs?

5. What is the formula of the Perfect Tense (Present, Past, Future)?

6. When do we use Perfect Tense?

 

IV. Give Participle II from the following verbs and translate them.

to derive, to hold, to express, to weigh, to take, to learn.