Вопрос № 1072266 - Английский язык

Дополните диалог:
Marsh: What is meant by plant disease?
Vlad: Some disturbance in the normal life-processes.
Marsh: Can 1_______ lead to premature death?
Vlad: Yes, sometimes.
Marsh: What plants are usually liable to disease?
Vlad: Cultivated plants are more liable to disease than 2_______.
Marsh: How are the weeds, insects, nematodes and diseases related to weather?
Vlad: In a suitable weather condition these can thrive well and cause havoc on the crop cultivation and 3_______.
Marsh: So, if the weather conditions in which they develop is known to us, we can apply control measures 4_______.

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A decisive factor for securing yields is the protection of agricultural crops. Day by day cultivated plants and supplies in store rooms are threatened by thousands of pests and disease pathogens. Every year millions of tons of produce are lost and plants and animals are retarded in growth and development or the products derived from these organisms are affected both quantitatively and qualitatively. Control of these pests must become the greatest task for all scientists, technical engineers and farmers responsible for the production of agricultural products.
What is meant by a pest or a disease pathogen? They are animal or plant organisms which damage either cultivated plants or the products derived there from. They directly or indirectly influence the health of a man and domestic and useful animals.
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Control of the pests must become the greatest task for all scientists, technical engineers and farmers responsible for …

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There are more than 20 different minerals in the body. 1_______. Then there are small quantities of sulphur, chlorine, magnesium, iron, copper, iodine, fluorine, cobalt, zink and others. Three of the most important minerals are calcium, phosphorus and iron. 2_______. The bones and teeth have 99 per cent of the calcium in the body. If people have enough calcium and phosphorus their bones and teeth will be strong and hard. 3_______. Milk and hard cheeses are the best sources of calcium. 4_______.

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The red colour of the blood is the colour of the hemoglobin. 1_______. As iron carries oxygen, people who do not have enough iron do not get enough oxygen for their normal activities. 2_______. A small quantity of iodine is also necessary for good nutrition – probably less than one ten-thousandth of a gramme daily. Deficiency of iodine results in an overgrowth of the thyroid gland. 3_______. Fluorine is a constituent of the enamel of the teeth but it is absent from most foods. So many cities now add traces of fluorine to the water supply. 4_______.

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Nutritionists think there are13 vitamins that humans need. 1_______. Vitamin A is important for healthy skin and eyes. Vitamin A in the diet comes from deep yellow fruits and vegetables, such as carrots, dark green leafy vegetables and milk, liver, cod-liver oil. When people have enough B vitamins, their appetite is good and their nerves are calm. 2_______.Vitamin C helps skin tissues to recover from cuts and burns. 3_______. Vitamin D is called the “sunshine” vitamin. It is also in cod-liver oil, milk and butter. Vitamin D helps to build strong bones. 4_______.

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There are no records of when or where bread originated. It is certain, however, that the known history of bread is longer than the history of any other food. 1_______. Although the history of bread is nearly as old as the history of mankind, the basic formulation has changed little. 2_______. In very early times grain was pounded and consumed as a watery paste. During the Stone Age grain was crushed between stones and gave a crude flour. 3_______. The result – a rather hard bread – was very different from the loaf we know today. 4_______.