Câu hỏi:
26/04/2020 2,332Read 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.
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.
How many vitamins must be derived from nourishment?
Đáp án chính xác
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Trả lời:
Giải bởi Vietjack
Đáp án là C.
Có bao nhiêu loại vitamin có thể lấy được từ thực phẩm?
Dẫn chứng: Among the 13 vitamins known today, five are produced in the body.
[ Trong số 13 loại vitamin được biết, có 5 loại có sẵn trong cơ thể. ]
13 – 5 = 8
Nhà sách VIETJACK:
CÂU HỎI HOT CÙNG CHỦ ĐỀ
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Read the following passage, and mark the letter (A, B, C or D) on your answer sheet to indicate the correct answer for each of the blanks.
GREENFORCE
If you’re interested in having the trip of a lifetime, but also doing something useful at the same time, then why not try joining a Greenforce expedition as a volunteer. Greenforce, which was (31)________in 1997, is an international research agency that gathers information about the wildlife and natural habitats in various parts of the world. There is a qualified biologist in (32)________of each team of volunteers and these carry out surveys all year round in some of the world’s remotest and most beautiful places. Volunteers come from all walks of life. The minimum age is 18 years, but there is no upper age limit. No previous experience is necessary as Greenforce provides location training in animal identification and survey methods. You’ll need to be somebody who enjoys the outdoor life, however, as working in remote (33)________can be challenging. You’ll also need to be passionate about wildlife and prepared to learn a lot about the place you visit. Each expedition lasts for ten weeks, and training begins in the UK with a residential weekend where you can get a (34)________of expedition life and meet up with some of your team mates, as well as learning about first-aid and basic survival skills. Each volunteer (35) )________£2,550 towards the cost of the expedition, but past volunteers say it is worth every penny.
Điền vào ô số 35
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Mark the letter A, B, C or D on your answer sheet to indicate that best combine this pair of sentences in the following questions.
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Câu 3:
Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions
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Câu 4:
Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions
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Câu 5:
Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction in each of the following questions
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Câu 6:
Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions
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Câu 7:
Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions
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