Câu hỏi:
15/11/2020 452Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 30 to 34.
Vitamins, taken in tiny doses, are a major group of organic compounds that regulate the mechanisms by which the body converts food into energy. They should not be confused with minerals, which are inorganic in their makeup. Although in general the naming of vitamins followed the alphabetical order of their identification, the nomenclature of individual substances may appear to be somewhat random and disorganized.. Among the 13 vitamins known today, five are produced in the body. Because the body produces sufficient quantities of some but not all vitamins, they must be supplemented in the daily diet. Although each vitamin has its specific designation and cannot be replaced by another compound, a lack of one vitamin can interfere with the processing of another. When a lack of even one vitamin in a diet is continual, a vitamin deficiency may result.
The best way for an individual to ensure a necessary supply of vitamins is to maintain a balanced diet that includes a variety of foods and provides adequate quantities of all the compounds. Some people take vitamin supplements, predominantly in the form of tablets. The vitamins in such supplements are equivalent to those in food, but an adult who maintains a balanced diet does not need a daily supplement. The ingestion of supplements is recommended only to correct an existing deficiency due to unbalanced diet, to provide vitamins known to be lacking in a restricted diet, or to act as a therapeutic measure in medical treatment. Specifically, caution must be exercised with fat-soluble substances, such as vitamins A and D, because, taken in gigantic doses, they may present a serious health hazard over a period of time
What does the passage mainly discuss?
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Trả lời:
Giải bởi Vietjack
D
Ý chính của bài đọc là gì?
A. Việc dùng vitamin để kiểm soát cân nặng.
B. Chế độ ăn các nhân để có sức khỏe tốt nhất
C. Sự phân loại vitamin và việc áp dụng trong y học D. Vai trò của vitamin trong dinh dưỡng (chế độ ăn hàng ngày)
place = role (n): vai trò, tầm quan trọng
Chọn D
Nhà sách VIETJACK:
CÂU HỎI HOT CÙNG CHỦ ĐỀ
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Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.
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Câu 2:
Professor Miller requires that all papers ______ written in ink.
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Câu 3:
The new computer system ______ for the post office will allow accounts to be managed over the Internet.
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Câu 4:
Ann studied very hard last year, but she couldn’t gain _____ to any university.
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Câu 6:
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 25 to 29.
You will make the interview process easier for the employer if you prepare relevant information about yourself. Think about how you want to present your (25) ____, experiences, education, work style, skills, and goals. Be prepared to supplement all your answers with examples that support the statements you make.
It is also a good idea to review your resume with a critical eye and identify areas that an employer might see as limitations or want further information. Think about how you can answer difficult questions (26) ____ and positively, while keeping each answer brief. An interview gives the employer a (27) _____ to get to know you. While you do want to market yourself to the employer, answer each question with an honest response.
Never say anything negative about past experiences, employers, or courses and professors. Always think of something positive about an experience and talk about that. You should also be (28) ____. If you are genuinely interested in the job, let the interviewer know that.
One of the best ways to show you are keen on a job is to demonstrate that you have researched the organization prior to the interview. You can also (29) ____ interest by asking questions about the job, the organization, and its services and products.
Điền vào ô 26.
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Câu 7:
_______, 70 percent alcohol is more effective than 100 percent alcohol.
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