Lời giải ĐỀ THI 09/01/2022 (Trung Quốc)

Report:

The diagram illustrates the various parts of a neuron and the way in which they function.

Overall, six connected components are shown, from the cell body on the left to the terminal buttons on the right.

The cell body, or soma, is surrounded by dendrites.  These are a number of branch-like structures which, like the branches of a tree, become thinner towards their ends.  These dendrites act as receptors of messages from other cells. 

One of the branches, however, has no dendrites and this is called the axon.  Instead of receiving messages it transmits them away from the cell body to other neurons, muscles or glands.  A myelin sheath covers the axon of some neurons, helping to speed up the electrical signals that pass down the axon shown in the diagram as action potential.  The electrical signals travel down the length of the axon, until they reach the terminal buttons that branch out from the axon. These terminal buttons, finally, enable the neuron to form junctions with other cells.

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Written by NgocBach (www.ngocbach.com)

ANSWER:

Many people choose to become vegetarians since a vegetarian diet  is believed to be better for the human body.  Although I agree that eating only plant foods provides us with a healthier diet, I do not believe that everyone should stop eating meat in order to enjoy good health.

There are a variety of reasons why becoming a vegetarian is beneficial. Firstly, science has proven that vegetarians have lower risks of developing several chronic illnesses such as heart disease, diabetes, some forms of cancer and obesity. This is due to the fact that a healthy vegetarian diet is typically low in fat and high in fiber. Secondly, eating vegetables properly gives us adequate nutrition to support our bodies. For example, raw spinach is a great source of Vitamins A, K, E as well as calcium. As a result, instead of eating many kinds of food to get these vitamins, we only need a bowl of spinach.

However,  there are some disadvantages to take into consideration before becoming  a vegetarian. Perhaps the principal one is that if a vegetarian’s daily meals are not properly balanced, he or she might suffer from a lack of calories to meet his or her energy needs.  Consequently, they will feel lethargic and unable to do anything energetic.  In addition, food which is eaten raw, steamed or stir-fried retains more vitamins and minerals than that which is boiled in water or deep-fried. Thus, culinary traditions such as those in Vietnam are the most advisable ones to follow in preparing vegetarian meals.  Vegetarians brought up using Western cooking methods should, therefore, either change their cooking style or else adopt a non-vegetarian diet.

In conclusion, although healthy, a vegetarian diet is not for everyone and it requires care in the choice of foods and preparation of meals

Written by NgocBach (www.ngocbach.com)