SECTION B PASSAGES Directions: In this section, you will hear several passages. Listen to the passages carefully and then answer the questions that follow. 听力原文： In addition to exercising regularly, eating a good breakfast is considered by many health experts to be a significant part of a successful way of reduction plan. After a night of fasting, the body needs to he replenished with nutrient in order to maintain a high level of energy throughout the day. Several nutritionists suggest that dieters should eat up to one third of their daily calories at breakfast time. These calories should be in the form. of balanced .meal of nutritious food. A balanced meal consists of five key elements: proteins, carbonhydrats, fats, vitamins and minerals. People who're dieting need a variety of foods to assure a constant supply of nutrients their bodies, need. If a well-balanced diet is not followed, the dieter may become sleepy, nervous, or feel out of sorts. If a poor diet is maintained for a long period of time, the dieters may become vitamin deficient. Vitamin deficiency can cause serious health problem. For these reasons, many doctors recommend that everyone, especially those on diet, starts the day with up to one-third of the daily requirement of nutrients in the form. of a well-balanced breakfast. The talk is mainly about ______.