职称英语（卫生类）模拟试题（二）
Proteins are built up from approximately twenty food elements called “amino-acids”, which are found more abundantly in animal protein than in vegetable protein. This means you have to eat a great deal more vegetable than animal food in order to get enough of these amino-acids. A great deal of the vegetable food goes to waste in this process and from the physiological point of view there is not much to be said in favor of life-long vegetarianism.
The economic side of the question, though, must be considered. Vegetable food is much cheaper than animal food. However, since only a small proportion of the vegetable protein is useful for body-building purposes, a consistent vegetarian, if he is to gain the necessary 70 grams of protein a day, has to consume a greater bulk of food than his digestive organs can comfortably deal with. In fairness, though, it must be pointed out that vegetarians claim they need far less than 70 grams of protein a day.
Whether or not vegetarianism should be advocated for adults, it is definitely unsatisfactory for growing children, who need more protein than they can get from vegetable sources.
There is a lacto-vegetarian diet which includes milk and milk products. Meat and cheese are the best sources of usable digestible protein and next come milk, fish and eggs. Slow and careful cooking of meat makes it more digestible and assists in the breaking down of the protein content by the body. When cooking vegetables, however, the vitamins, and in particular the water-soluble vitamin C, should not be lost through over-cooking.
31. A vegetarian is a person who ________.
A. eats the meat of animals only
B. eats the vegetable only
C. drinks milks only
D. eat nothing at all
32. Compared with vegetable protein, animal protein contains ________
A. more proteins
B. more nutrients
C. more minerals
D. more amino-acids
33. The word “lacto-vegetarian” in Paragraph 4 means ________
A. very strict vegetarian
B. they eat fish
C. not strict vegetarian
D. not-vegetarian
34. From the passage, we know that ________.
A. to gain enough protein, one must consume much more vegetable food than animal food
B. cooking vegetables for a long time makes it more digestible
C. milk is the best source of usable animal protein
D. the most common deficiencies in Western diets are those of vitamins
35. Which of the following best reflects the author's attitude?
A. Vegetarianism is good for one's health.
B. Vegetarianism should be advocated for adults.
C. One should have a well-balanced diet containing elements of all foods.
D. A lacto-vegetarian diet is the best as it provides adequate nutrition.
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Look After Your Voice
Often speakers at a meeting experience dry mouths and ask for a glass of water. You can solve the problem by activating the saliva in your mouth. First gently bite the edges of your tongue with your teeth. Or, press your entire tongue to the bottom of your mouth and hold it there until the saliva flows. Or you can imagine that you are slicing a big juicy lemon and sucking the juice.
Before you begin your talk, be kind to your voice. Avoid milk or creamy drinks which coat your throat. Keep your throat wet by drinking a little sweetened warm tea or diluted fruit juice.
If you sense that you are losing your voice, stop talking completely. Save your voice for your speech. You may feel foolish using paper to write notes, but the best thing you can do is to rest your voice. If you need to see a doctor, perhaps you can get some advice from a professional singer. In the meantime, do not even talk in a low voice.
What about drinking alcohol to wet your throat? I advice you not to touch alcohol before speaking. The problem with alcohol is that one drink gives you a little confidence. The second drink gives you even more confidence. Finally you will feel all-powerful and you will feel you can do everything, but in fact your brain and your mouth do not work together properly. Save the alcohol until after you finish speaking.
Perhaps you want to accept the advice, but you may wonder if you can ever change the habits of a lifetime. Of course you can. Goethe, who lived before indoor skating rinks or swimming pools, said, “We learn to skate in the summer and swim in the winter”. Take this message to heart and give yourself time to develop you new habits. If you are willing to change, you will soon be able to say that you will never forget these techniques because they became a part of your body.
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