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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

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~

　

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