C．Its molecule.

　　D．How you use it.

　　59．Which of the following might be a better choice to make a healthy salad?

　　A．Refined walnut oil.

　　B．Safflower oil.

　　C．Unrefined olive oil.

　　D．Sunflower oil.

　　60．Healthy oil can become unhealthy if________ according to the passage.

　　A．you keep it for too long

　　B．it is heated well beyond its smoke point

　　C．it is refined

　　D．its flavor is changed

　　第二节(共5 小题；每小题2分，满分10分)

　　61.

　　Nowadays，millions of people misuse and even overuse pain medications and other drugs.Research by the American National Institute on Drug Abuse (NIDA,1999) shows that around 2% of the population over age 12 were using drugs non-medically.

　　62.

　　NIDA views medications as a powerful force for good in the contemporary world.They reduce and remove pain for millions of people suffering from illness and disease.They make it possible for doctors to perform complicated surgery to save lives.Many people afflicted by serious medical conditions are able to control their symptoms and become active，contributing citizens.NIDA points out that most individuals who take these drugs use them in a responsible.

　　63.

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