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2019英语专八改错练习附答案(18)

2019-01-10 15:35:57 来源:网络专四专八资料下载

2019英语专八改错练习附答案(18)

2019英语专八改错练习附答案汇总

  Excessive calories from sugar can contribute to weight problems,

  and sugar is also well known for its ability to promote teeth __1__

  decay.

  Too many calories from fat have also taken their toll from the __2__

  public's health. In 1988, the U.S surgeon general issued a report

  linking high level of fat intake to an increased risk for obesity.

  Obesity is a risk factor for high bloody pressure, stroke, and __3__

  diabetes. Research has also shown a relationship between high

  levels of fat in the diet and cancer. In addition, scientists

  have linked some types of fat to high blood cholesterol level,

  which must lead to heart disease. Such reports have prompted __4__

  health experts and nutritionists to recommend that adults and

  children over age 2 not only watch their sugar intake but

  also to limit their fat intake to a maximum of 30% of their __5__

  complete calories. This has encouraged many people to turn __6__

  to products made with fat and sugar substitutes.

  Low-calorie sugar substitutes have been around for decades,

  but the recent trend in eating "light" has created a boom in this

  branch of food-technology research. Today, food chemists are

  seeking for better substitutes by modifying existing foods, __7__

  searching for new compounds in nature, and concoct entirely __8__

  new substances. But the research process is complicated by our

  incomplete understanding of how the human body interacts with

  the chemicals we eat.

  For example, scientists do not already know exactly why some __9__

  substances taste sweet. Other questions involve the safe and __10__

  usefulness of artificial fats and sweeteners.

  童鞋们要自己做一遍再参考答案哈~

 

本文关键字: 英语专八改错 专八语言知识 专八改错

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