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13 Explain the difference in the meaning of words and form sentences to illustrate it:

physician – physicist

selection – selectivity

estimated – esteemed

to compute – to calculate

disposal – disposition

automated – automatic

immunity – impunity

unlike – unlikely

treatment – cure

indispensable – necessary

advanced – progressive

to remain – to stay

progress – progression

alternative – unthinkable

technique – technology

institute – institution

14 Provide the words given in brackets with the appropriate

negative prefix:

Example: Since many human (orders) are due to defective genes, genetics is concerned with the study of hereditary defects.

Since many human disorders are due to defective genes, genetics is concerned with the study of hereditary defects.

1 Some hereditary defects are (…compatible) with life. 2 When inheritance is sex-linked, as in hemophilia and muscular (…trophy), half the boys born to women carrying gene is affected. 3 In dominant (…orders), which make up a tiny fraction of hereditary (…orders), only one parent need have an (…normal) gene for there to be a 50 per cent chance that a child will be afflicted. 4 Penicillin is an example of an (…biotic). 5 An (…gen) is a substance usually foreign to the body. 6 The flu virus (…gen) enters the body, causing the production of (…bodies) in the bloodstream. 7 An anomaly is a structure or organ with an (…regular) formation.

15 Translate the following sentences. Pay attention to the use and meaning of due to:

1 Meat poisoning is usually due to organisms of Salmonella group. 2 Appendicitis is a bacterial infection due to streptococci, colon bacilli and other organisms. 3 Early deaths are due to toxemia and less frequently to complicating infections. 4 Deaths in the second or third week are due to myocarditis or other complicated infections. 5 Pyloric obstruction due to scar tissues formation may occur and may be partial or complete. 6 Air contamination due to motor exhausts is generally heaviest in the business and industrial districts. 7 What were infla­mmatory processes after operations due to? 8 Food poisoning may be due to a variety of causes, including the injection of organic and inor­ganic chemical substances as well as bacterial poisoning.

16 Give an adequate translation of the following:

1 We know that many infectious diseases are caused by viruses. 2 It has been established that tissue therapy should be accompanied by other methods of treatment accepted for the given disease. 3 It has been observed that all the patients to whom tissue had been grafted display improved spirits and appetite. 4 The doctor wants to know what the patient takes when he cannot sleep. 5 The patient was eager to know when he would be discharged from the hospital. 6 There are some cases when it is desirable to fumigate a room or a house. 7 Formalin is one of the most effective fumigants, when properly used. 8 Fumigation is rarely used today because it is not always effective. 9 We know that most disease germs die quickly when they leave the body, and so we do not consider fumigation so important. 10 A culture medium is a prepared substance on which microorganisms will grow.

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