Соедините слово в правой колонке в его определением слева

supplement	a) the process of combining oxygen and another element to produce energy
tissue	b)something that is nourishing
3. oxidation	c)to add something
4. calorie	d)something or someone that is dangerous
5. nutrient	e) the material forming animal or plant cells
6. gastrointestinal system	f) a punishment for breaking a law
7. respiratory system	g) the practice of treating illness by removing or repairing the damaged part of the body
8. penalty	h) the body system that includes the organs that digest food
9. menace	i) the body system that includes the organs that perform the breathing function
10. surgery	j) a quantity of heat necessary to raise the temperature of 1 gram of water one degree of centigrade

VARIANT 2

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How Does Smoking Affect Health?

Surgeon General’s report. In 1964 Surgeon General Luther Terry re­leased a 380-page report of a commit­tee that had studied the effects of smoking on health. The committee members had analyzed hundreds of re­search studies on the effects of smok­ing. The ten doctors on the committee summarized their findings and recom­mendations in one sentence: "Ciga­rette smoking is a health hazard of sufficient importance in the United States to warrant appropriate reme­dial action" In simpler language this means that smoking is a danger to people's health, and that something should be clone about it.

The committee made this strong statement because it found that ciga­rette smoking is directly related to cancer of the lung and lip, chronic bronchitis, heart disease, emphysema (em’fə sē'me), and several other seri­ous diseases.

You can understand that not all smokers have lung cancer or any of the other diseases associated with smoking. Smoking does not cause these diseases in all smokers, for the same reason that cold viruses do not cause colds in all people who are exposed to them. Smoking greatly increases a smoker's chances of contracting the diseases mentioned. But it does not make it certain that he will contract them.

Smoke affects the heart. Doctors have known for years that the nicotine (nik'ə tēn) in cigarette smoke has sev­eral effects on the body. Most of these occur if a smoker inhales the smoke of cigarettes. When the blood absorbs nicotine from the smoke in the lungs, several reactions occur. Some blood vessels contract, thus slowing the flow of blood to the regions served by these vessels. The heart is forced to work harder in order to pump blood through the narrower blood vessels. Thus, the blood pressure rises, and a strain is placed on the heart.

You can see that it would be es­pecially injurious for a person with a heart disease to smoke heavily. In fact the report of the Surgeon General of the United States shows that more smokers die of heart disease than do nonsmokers.

Дата добавления: 2015-08-18