Ex. 34. Analyze the ing - forms. Translate the sentences.

1. When a choice is being made about medication, both safety and efficacy should be considered.

2. The less healthy your heart and arteries, the more likely the advantages of taking aspirin will overweight any risks.

3. These symptoms should not be ignored. The longer you are postponing the treatment, the worse is the prognosis.

4. The onset of such reaction starts with fever, nausea and vomiting, but any other symptoms can occur.

5. We should understand that the human body is a very complex machine, and whether we like or not things sometimes are going wrong.

6. When taken during pregnancy, anabolic steroids can affect fetal development by causing the development of male features in female fetus and female features in male fetus

7. Twenty two findings show that one drug is less toxic than the other ones in the results reported.

Ex. 35 Read and translate text H and I and answer the questions:

1. What is your blood type?

2. What does your blood type depend on?

3. Person with what blood type can you donate your blood to?

4. Person with what blood type can you receive blood from?

5. What diet is the best diet for you and why?

Text H. Blood Types: What's Your Type?

In some ways, every person's blood is the same. But, when analyzed under a microscope, some differences are visible. In the early 20th century, an Austrian scientist named Karl Landsteiner classified blood according to those differences. He was awarded the Nobel Prize for his achievements.

Landsteiner observed two distinct chemical molecules on the surface of the red blood cells. He labeled one molecule "A" and the other molecule "B." If the red blood cell had only "A" molecules on it, that blood was called type A. If the red blood cell had only "B" molecules on it, that blood was called type B. If the red blood cell had a mixture of both molecules, that blood was called type AB. If the red blood cell had neither molecule, that blood was called type O.

If two different blood types are mixed together, the blood cells may begin to clump together in the blood vessels, causing a potentially fatal situation. Therefore, it is important to match blood types before blood transfusions. In an emergency, type O blood can be given because it is accepted by all blood types.

A person with type A blood can donate blood to a person with type A or type AB. A person with type B blood can donate blood to a person with type B or type AB. A person with type AB blood can donate blood to a person with type AB only. A person with type O blood can donate to anyone.

A person with type A blood can receive blood from a person with type A or type O. A person with type B blood can receive blood from a person with type B or type O. A person with type AB blood can receive blood from anyone. A person with type O blood can receive blood from a person with type O.

Because of these patterns, a person with type O blood is a universal donor. A person with type AB blood is a universal receiver. In general, however, it is still best to mix blood of matching types and Rh factors.

Дата добавления: 2015-07-20