四、文意選填 10% (請於答案卷上作答)      You’ve most likely heard the news by now: A car-commuting, desk-bound, TVwatchinglifestyle can be harmful to our health. All the time that we spend _(61)_ in the chair islinked to increased risks of so many deadly diseases that experts have named this modern-dayhealth epidemic the “sitting disease.”      Sitting for too long slows down the body’s metabolism and the way enzymes breakdown our fat _(62)_, raising both blood sugar levels and blood pressure. Small amounts ofregular activity, even just standing and moving around, throughout the day is enough to bringthe _(63)_ levels back down. And those small amounts of activity add up—30 minutes of lightactivity in two or three-minute bursts can be just as effective as a half-hour block of exercise.But without that activity, blood sugar levels and blood pressure keep creeping up, _(64)_damaging the inside of the arteries and increasing the risk of diabetes, heart disease, _(65)_, andother serious diseases. In _(66)_, fundamental changes in biology occur if you sit for too long.      But wait, you’re a runner. You needn’t worry about the harm of a _(67)_ lifestylebecause you exercise regularly, right? Well, not so fast. Recent studies show that people spendan average of 64 hours a week sitting, whether or not they exercise 150 minutes a week asrecommended by World Health Organization. Regular exercisers, _(68)_, are found to be about30 percent less active on days when they exercise. Overall, most people simply aren’texercising or moving around enough to _(69)_ all the harm that can result from sitting ninehours or more a day.      Scared _(70)_ out of your chair? Good. The remedy is as simple as standing up andtaking activity breaks. 

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