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 36 to 42.
Carbohydrates, which are sugars, are an essential part of a healthy diet. They provide the main source of energy for the body, and they also function to flavor and sweeten foods. Carbohydrates range from simple sugars like glucose to complex sugars such as amylose ans amylopectin. Nutritionists estimate that carbohydrates should make up about one-fourth to one-fifth of a person’s diet. This translates to about 75-100 grams of carbohydrates per day.
A diet that is deficient in carbohydrates can have an adverse effect on a person’s health. When the body lacks a sufficient amount of carbohydrates, it must then use its protein supplies for energy, a process called gluconeogenesis. This, however, results in a lack of necessary protein, and further health difficulties may occur. A lack of carbohydrates can also lead to ketosis, a build-up of ketones in the body that causes fatigue, lethargy, and bad breath
Which of the following do carbohydrates NOT do?
A. prevent ketosis
B. cause gluconeogenesis
C. provide energy for the body
D. flavor and sweeten food
Đáp án B
Đề: Carbohydrates KHÔNG làm được điều nào sau đây?
A. phòng ngừa hội chứng ketosis
B. gây nên quá trình gluconeogenesis
C. cung cấp năng lượng cho cơ thể
D. tạo hương bị và làm ngọt thực phẩm
Dựa vào đầu đoạn 2:”When the body lacks a suffcient amount carbohydrates if must then use its protein supplies for energy, a process called gluconeogenesis.”
(Khi cơ thể không có đủ lượng cacbohydrates, nó phải dùng nguồn cung protein làm năng lượng, quá trình này gọi là gluconeogenesis.)