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請依下文回答第 21 題至第 25 題：If you spend most of your days sitting at school, work, at a computer or stretched out on a couch athome, you may be taking up to two years off your life. It is common knowledge that a sedentarylifestyle 21 the risk of heart disease, type 2 diabetes, cancer and obesity, and can result inpremature death. Many people think they can compensate for sitting around by walking, playing sportsor going to the gym. 22 , this might not be so. A new study just published in the journal “Annals ofInternal Medicine” suggests the effect on our longevity from sitting for long periods of time cannotbe 23 through exercise. Even 60 minutes of daily exercise may not be enough.The study is from Dr. David Alter and his colleagues at Toronto University. Dr. Alter and his teamanalysed 47 studies that tracked different groups of people, 24 kept notes on how long they satdown each day and how much they exercised. They found that the most sedentary groups had a 24%increased chance of dying during the course of the study than the least sedentary 25 . This remainedthe case even though those who sat a lot also did 60 minutes of daily exercise.
21
(A)outweighs
(B)reduces
(C)assesses
(D)increases

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