B. News

　　C. Entertainment

　　D. Trends

　　5. For each issue, which magazine is the cheapest according to the advertisement?

　　A. The New Yorker

　　B. Playboy

　　C. Nickelodeon

　　D. Lucky

　　B

　　Americans have developed an olive oil habit. Out to dinner recently, I saw a man dipping his white bread in olive oil and then pouring it all over his salad, saying, "Wow, this is so good for me!"

　　But is olive oil the healthiest fat? No, it's not. You might ask, doesn't it lower cholesterol(胆固醇)? Well, only when you substitute olive oil in equivalent amounts for butter or oils that are higher in saturated（饱和的） fat. Olive oil doesn't lower cholesterol; it just doesn't raise it as much. You may be better off with canola（菜籽油） oil. The 1999 Lyon Diet Heart Study found that a Mediterranean diet significantly reduced heart attacks and premature deaths. Many people attributed this to eating a lot of olive oil. But it was increased consumption of canola oil that accounted for these improvements.

　　Also, study participants ate more whole-grain bread, vegetables, fish and fruit, and less meat. Butter and cream were replaced with man-made butter made from canola oil, which has more healthy omega-3 fatty acids than olive oil does.

　　Another study found that olive oil reduced blood flow by 31%. Canola oil and fish oil don't. (You want to increase blood flow to all body parts.)

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