| 问题   | 答案   | 
        
        |  开始学习 strongly desired by many:  |  |   A study found that as a coveted food, chocolate was in a class of its own. |  |  | 
|  开始学习 a strong wish, especially one that is difficult or impossible to control:  |  |   They described the urge as 'overpowering'. |  |  | 
|  开始学习 an unpleasant effect of a drug that happens in addition to the main effect:  |  |   guilt was cited as a side effect. |  |  | 
|  开始学习 Something that is ... attracts you to it by offering you advantages or pleasure:  |  |   Psychologists believe the craving for chocolate is more to do with its enticing image. |  |  | 
|  开始学习 an occasion when an activity is done in an extreme way, especially eating, drinking, or spending money:  |  |   they found that bingeing on a variety of foods to counteract a specific craving only leads to depression and guilt |  |  | 
|  开始学习 any substance that plants or animals need in order to live and grow:  |  |   Most doctors believe a well-balanced diet provides all the nutrients we need. |  |  | 
|  开始学习 a state of not having, or not having enough, of something that is needed:  |  |   Anybody with low thyroid activity is suffering from some kind of nutritional deficiency |  |  | 
|  开始学习 a gland (= an organ) in the front of the neck that is involved in controlling the way the body develops and works  |  |   Anybody with low thyroid activity is suffering from some kind of nutritional deficiency |  |  | 
|  开始学习 an illness of the body tissues that is caused by not having enough vitamin C  |  |   These are not deficiencies on a scale that could cause scurvy, |  |  | 
|  开始学习 ill: worse than the usual or expected standard  |  |   they could be making you feel seriously under par. |  |  | 
|  开始学习 (either of the two parts of) a long tube through which food travels from the stomach and out of the body while it is being digested:  |  |   This makes the intestines inflamed, |  |  | 
|  开始学习 physical and mental health and happiness, especially of a person:  |  |   diet can have a profound effect on mental welfare |  |  |