Read 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 ...
Nguyễn Thanh Thảo | Chat Online | |
01/09 12:31:31 (Tiếng Anh - Lớp 12) |
Read 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.
According to the passage, vitamins are _______.
Lựa chọn một trả lời để xem Đáp án chính xác Báo sai đáp án hoặc câu hỏi |
A. food particles 0 % | 0 phiếu |
B. essential nutrients 0 % | 0 phiếu |
C. miscellaneous substances 0 % | 0 phiếu |
D. major food groups 0 % | 0 phiếu |
Tổng cộng: | 0 trả lời |
Trắc nghiệm liên quan
- 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 ... (Tiếng Anh - Lớp 12)
- 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 ... (Tiếng Anh - Lớp 12)
- 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 ... (Tiếng Anh - Lớp 12)
- 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 ... (Tiếng Anh - Lớp 12)
- 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 ... (Tiếng Anh - Lớp 12)
- Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions. The economic crisis caused the downfall of the government. (Tiếng Anh - Lớp 12)
- Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions. The situation in the country has remained relatively stable for a few months now. (Tiếng Anh - Lớp 12)
- Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions. They were unable to detect the problem with the airplane’s engine. (Tiếng Anh - Lớp 12)
- Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions. The year-end party was out of this world. We had never tasted such delicious food. (Tiếng Anh - Lớp 12)
- Mark the letter A, B, C, or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges Ann: “_______” – Bob: “Thank you. We are proud of him.” (Tiếng Anh - Lớp 12)
Trắc nghiệm mới nhất
- Các trung tâm công nghiệp lớn tạo nên “chuỗi đô thị” ở đảo Hôn-su của Nhật Bản là (Địa lý - Lớp 11)
- d) Một hình chữ nhật có chiều dài là 15 cm và chiều rộng là 10 cm. Tính diện tích của hình chữ nhật đó. (Toán học - Lớp 5)
- c) 1 km = .?. M, 1 kg = .?. G, 1l = .?. Ml Số thích hợp điền vào .?. Là: (Toán học - Lớp 5)
- b) Trang trại A thu hoạch được 120 tạ lúa, trang trại B thu hoạch được 12 tấn lúa. Hỏi trang trại nào thu hoạch được nhiều lúa hơn (Toán học - Lớp 5)
- a) 12 530 m2 = …?..... Ha (Toán học - Lớp 5)
- Thành phần dân cư có số lượng đứng thứ hai ở Hoa Kì là người (Địa lý - Lớp 11)
- Phát biểu nào sau đây không đúng với hoạt động thông tin liên lạc của Hoa Kì? (Địa lý - Lớp 11)
- d) Một thửa ruộng dạng hình chữ nhật có chiều dài 300 m, chiều rộng 120 m. Hỏi diện tích của thửa ruộng đó là bao nhiêu héc-ta? (Toán học - Lớp 5)
- Gió mùa mùa đông từ lục địa Á - Âu thổi đến Nhật Bản trở nên ẩm ướt do đi qua (Địa lý - Lớp 11)
- c) Một hình chữ nhật có chiều dài 35 cm và chiều rộng 20 cm. Tính diện tích hình chữ nhật đó. (Toán học - Lớp 5)