Introduction to biology. Кулагина Ж.Д. - 9 стр.

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      1. Vaccines, penicillin and sulpha (be) products of the biological laboratory. 2.
Elementary training in general biology (be) essential for every educated person. 3.
Medicine, physiology, agriculture and forestry (be) the fields of knowledge requiring
elementary training in general biology. 4. In external appearance plants (be) usually
green. 5. The aim of his experiments (be*) to learn more about how the body adapts to
weightlessness.

      Ex. 4. State the tense and voice used in the following sentences.

1. Such functions as sensation, motion, food-taking and respiration are called life
functions. 2. To find this out hundreds of guesses were made*, thousands of
experiments staged. 3. We call sciences studying nature natural sciences. 4. Botany is*
the scientific study of plants. 5. With the invention of the microscope scientists saw*
things that had been hidden* before. 6. In certain parts of the tropics the arrival of the
rainy season has stimulated growth of plants. 7. A lot of investigations have been
conducted in this field. 8. No important animal phylum will be restricted to these
environments. 9. Almost all the main branches of the animal kingdom are represented in
the ocean. 10. Carbon dioxide is constantly being moved from place to place so as to be
available everywhere.

      Ex. 5. Use the Passive voice in the following sentences.

Model: Biology gives* a lot of information about different living things
       A lot of information about different living things is given by biology.

1. The life of other living things affects mankind. 2. Biologists have increased our food
supply. 3. They have developed new and better varieties of plants and animals. 4.
Scientific methods of farming have given us much more food. 5. Biologists control
many diseases. 6. They have saved millions of lives. 7. Biologists have discovered and
developed the methods of prevention and cure of many diseases. 8. Biologists have
solved many mysteries of the human body. 9. Biologists have discovered how blood
circulates.

     Ex. 6. Translate the following sentences into Russian paying attention to the
meaning of each modal verb.

1. Some animals can exist under the immense pressure of the deep seas. 2. They are at
the University now but they are to meet here. 3. The crop yields are to be increased this
year. 4. He has to translate a new article so he will have to work the whole evening. 5.
You must read this book. 6. He has to read this book. 7. You should read this book. 8.
You are to read this book. 9. You ought to read this book. 10. We have to develop new
varieties of plants. 11. We had to adapt the plants to new conditions. 12. We shall have
to create suitable conditions for this experiment. 13. Our teacher is to be here at 9