Прочитайте текст и заполните пропуски подходящими по смыслу словами From earliest times 1_______ are...: ответ на тест 781894 - Английский язык

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From earliest times 1_______ are known to play an important part in everyday life of man. We know plants to provide us with 2_______, clothes, shelter and many other necessary things. We are still as dependent upon plants as primitive man was many thousand years 3_______. Great necessity caused primitive man to grow plants. And the 4_______ of plants is thought to be closely connected with the man’s progress. In order to grow plants man had to settle down and to begin building homes. Primitive men had few needs except food and clothing.

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From earliest times 1_______ are known to play an important part in everyday life of man. We know plants to provide us with 2_______, clothes, shelter and many other necessary things. We are still as dependent upon plants as primitive man was many thousand years 3_______. Great necessity caused primitive man to grow plants. And the 4_______ of plants is thought to be closely connected with the man’s progress. In order to grow plants man had to settle down and to begin building homes. Primitive men had few needs except food and clothing.

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Civilization has 1_______ man’s wants to a surprising extend. The man of today is no longer satisfied with merely having 2_______ to eat and house to live in. He wants raw materials which can be made into 3________ things and products.
Our food and clothing are produced directly or indirectly by plants. Many animals feed on plants and produce food and raw materials used by man. Without plant life neither animals nor men will be able to live.
Many things we use in 4_______ life are made from plants. The paper we write on, the clothes we wear, the tables we sit at, all come from plants. Plants are used as timber in the making of furniture and as fuel. Many drugs are made from plants.

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Plant culture began a great many years ago. The most 1_______ plants in the world are said to have been grown 4,000 years ago.
There 2_______ very many species of plants. But the best known to most people are those that are useful to men. They are grown and cultivated by 3_______ and are called farm crops. These crops are used for many different purposes.
Some are used directly by man, some are consumed by animals, and others are used in industry and 4_______. We can certainly expect new uses to be found and the value of other plants to be discovered.

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Every green plant is a ‘factory’. It’s a sugar ‘factory’. It works from early day to dark every day, even on Sunday.
The 1_______ must have two things for making sugar: water and carbon dioxide. Carbon dioxide comes from the air. It is one of the gases the air is made of. Water comes from the 2_______.
As soon as 3_______ from the ground gets to a leaf it goes all over the leaf. Water and carbon dioxide are put together to make sugar. Most factories run on electricity. The green factories run on sunshine.
After the plant has made 4_______, it makes the other kinds of food it needs.
Without green plants there wouldn’t be any sugar or any other food for men and animals. Green plants are the world’s most important ‘factories’.

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The digestive 1_______ consists of the mouth, the gullet, the stomach, the small intestine, and the large intestine. The mucous membrane of the 2_______ tract has glands in it. They secrete digestive fluids. 3_______ and sheep have much more complicated digestive tracts than other animals. Their 4_______ consist of four compartments. The horse, the pig and some other animals have a simple stomach. It consists of only one compartment.