开学课堂英语四级考试阅读练习（5）

　　1.What is the best possible title of the passage?

　　a.Drug and Food

　　b.Cancer and Health

　　c.Food and Health

　　d.Health and Drug

　　2.Which of the following statements is NOT ture?

　　a.Drugs are always given to animals for medical reasons

　　b.Some of the additives in our food are added to the food itself and some are given to the living animals

　　c.Researchers have known about the potential dangers of food additives for over thirty-five years.

　　d.Food may cause forty percent of cancer in world.

　　3.How has science done something harmful to mankind?

　　a.Because of science , diseases caused by polluted food haven been virtually eliminated.

　　b.It has caused a lack of information concerning the value of food.

　　c.Because of the application of science,some potentially harmful substances have been added to food.

　　d.The scientists have preserved the color of meats,but not of vegetables.

　　4.What are nitrates used for?

　　a.They preserve flavor in packaged foods.

　　b.They preserve the color of meats.

　　c.They are the objects of research.

　　d.They cause the animals to become fatter.

　　5.The word carcinogenic most nearly means _____.

　　a.trouble-making

　　b.color-retaining

　　c.money-making

　　d.cancer-causing

　　答案：cacbd