AV Clip 7: traffic and Heart Attack AV 7 Traffic and Heart Attack.mp4 Watch the video clip three times and complete the following passage by filling in each blank with the word from the video clip. There is no question Americans are spending large amounts of their time these days sitting in traffic. More than 120 million people (1) _________ to work by car each day and most of them spend at least 30 minutes on the road. But is always in the car (2) _______ our health? New research from Germany finds exposure to traffic may help (3) ______ heart attacks in people already at risk. They interviewed more than 1,400 patients to determine what type of events immediately (4) ______ heart attack symptoms. Results show that patients were three times more likely to have been driving a car, riding public (5) ________ or riding a bicycle near traffic within an hour of their heart attack than doing any non-traffic activities. Women appeared more (6) ________ than men. Their heart attack risk was five times greater when exposed to traffic. Researchers say they are still not sure how traffic may (7) ______ to heart attacks, but they theorize that a combination of stress and heightened pollution may be to (8) _________.