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.
Human Nutrition is the study of how food affects the health and survival of the human body. Human beings require food to grow, reproduce, and maintain good health. Without food, our bodies could not stay warm, build or repair tissue, or maintain the heartbeat. Eating the right foods can help us avoid certain diseases or recover faster when illness occurs. These and other important functions are fueled by chemical substances in our food called nutrients. Nutrients are classified as carbohydrates, proteins, fats, vitamins, minerals, and water.
When we eat a meal, nutrients are released from food through digestion. Digestion begins in the mouth by the action of chewing and the chemical activity of saliva, a watery fluid that contains enzymes, certain proteins that help break down food. Further digestion occurs as food travels through the stomach and the small intestine, where digestive enzymes and acids liquefy food and muscle contractions push it along the digestive tract. Nutrients are absorbed from the inside of the small intestine into the bloodstream and carried to the sites in the body where they are needed. At these sites, several chemical reactions occur, which ensures the growth and function of body tissues. The parts of foods that are not absorbed continue to move down the intestinal tract and are eliminated from the body as feces.
Once digested, carbohydrates, proteins, and fats provide the body with the energy it needs to maintain its many functions. Scientists measure this energy in kilocalories, the amount of energy needed to raise one kilogram of water one degree Celsius. In nutrition discussions, scientists use the term calorie instead of kilocalorie as the standard unit of measure in nutrition.
Nutrients are classified as essential or nonessential. Nonessential nutrients are manufactured in the body and do not need to be obtained from food. Examples include cholesterol, a fatlike substance present in all animal cells. Essential nutrients must be obtained from food sources, because the body either does not produce them or produces them in amounts too small to maintain growth and health. Essential nutrients include water, carbohydrates, proteins, fats, vitamins, and minerals.
An individual needs varying amounts of each essential nutrient, depending upon such factors as gender and age. Specific health conditions, such as pregnancy, breast-feeding, illness, or drug use, make unusual demands on the body and increase its need for nutrients. Dietary guidelines, which take many of these factors into account, provide general guidance in meeting daily nutritional needs.
From “Human Nutrition” by Worthington-Roberts, Bonnie, Microsoft ® Student 2009.
Which of the following is NOT true about the process of digestion
A. The small intestine covers the whole digestive system.
B. The small intestine helps the body absorb nutrients.
C. Nutrients are carried to different sites in the body
D. Saliva plays an important role in the first stage of digestion
1. A good doctor/ need/ know/ how/ whole body/ function/ and/ what/ people/ do/ maintain/ overall health.
=> A good doctor needs to know how to whole body functions and what people do to maintain overall health.
2. Doctors/ stay informed/ all/ latest breakthroughs/ medical field.
=> Doctor stays informed all people about the latest breakthroughs in the medical field.
3. doctor’s good manner/ make/ patients/ feel/ more comfortable/ appointments.
=>A doctor’s good manner makes patients feel more comfortable in appointments.
4. Doctors/ also explain/ what/ they/ doing/ and/ help/ patients/ treatments properly.
=>Doctors also explain to patients what they need to do and help patients treatments properly.
5. good doctor/ listen/ patients attentively/ and/ respond/ them carefully.
=> A good doctor always listen patients attentively and respond them carefully
Em đoán thế đó ạ :))))
1.A good doctor needs to know how the whole body functions and what people should do to maintain overall health.
2. Doctors should stay informed of all the latest breakthroughs in the medical field.
3. Doctor’s good manner makes patients feel more comfortable in appointments.
4. Doctors should also explain what they are doing and help patients with treatments properly.
5. A good doctor should listen to patients attentively and respond to them carefully.