It’s 3 o’clock and you’ve been hard at work. As you sit at your desk, a strong desire (欲望) for chocolate overcomes you. You try to busy yourself to make it go away. But it doesn’t. Here is another situation. Perhaps you are not feeling well. The only thing you want to eat is a big bowl of chicken soup, like your mom used to make when you were sick as a child. Food cravings are a strong desire for a specific type of food. And they are normal.
Scientists at the website How Stuff Works compare hunger and cravings this way. Hunger is a fairly simple connection between the stomach and the brain. They even call it simply “stomach hunger.” When our stomachs burn up all of the food we have eaten, a hormone (荷尔蒙) sends a message to one part of the brain for more food, which controls our most basic body functions such as thirst, hunger and sleep. The brain then produces a chemical to start the appetite (食欲) and you eat. Hunger is a function of survival.
A craving is more complex. It activates (刺激) brain areas related to emotion, memory and reward. These are the same areas of the brain activated during drug-craving studies. Because of this, some scientists call food cravings “mind hunger.” People often crave foods that are high in fat and sugar. Foods that are high in fat or high in sugar produce chemicals in the brain. These chemicals give us feelings of pleasure.
In a 2007 study, researchers at Cambridge University found that “dieting or controlled eating generally increases the possibility of food craving.” So, the more you refuse yourself a food that you want, the more you may crave it. However, fasting is a bit different. They found that eating no food at all for a short period of time reduced food cravings.
So, the next time you crave something very special, know that it’s the fault of your brain, instead of your stomach.
32. The author describes two situations in the first paragraph to ________.
A. deepen the understanding of hunger      B. report the discovery of craving study
C. introduce the topic of the whole passage   D. remind readers of their own special food
33. What do we learn about food craving?
A. It shows food is connected with emotion.       B. It makes sure that a person survives hunger.
C. It means the stomach functions well.           D. It proves the brain decides your appetite.
34. What’s the likely result of dieting?
A. The drop of chemicals.          B. The increase of food desire.
C. The refusal of fat and sugar.      D. The disappearance of appetite.
35. In which part of a newspaper can you see this passage?
A. Education.     B. Entertainment.     C. Science.      D. Economy. 
   C A B C