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27. Which of the following can best describe the couple?A. Wealthy and respectable.B. Humorous and hardworking.C. Anxious and struggling.D. Generous and caring.CNew research, led by the University of Sydney and University College London (UCL),suggests that adding a small amount of physical activity—such as uphill walking or stairclimbing-into your day may help lower blood pressure.The research team studied health data from 14,761 volunteers in five countries to see howreplacing one type of movement behaviour with another across the day is related to bloodpressure. Each participant used a wearable accelerometer device (加加速度计） on their leg tomeasure their activity and blood pressure throughout the day and night.Daily activity was divided into six categories: sleep, sitting, slow walking, fast walking,standing, and more energetic exercise such as running, cycling or stair climbing.题The team modelled what would happen if an individual changed various amounts of onebehaviour for another in order to measure the effect on blood pressure for each scenario and答found that replacing sitting with 20-27 minutes of exercise per day could potentially reducecardiovascular (心血管的) disease by up to 28 percent at a population level.要First author Dr Jo Blodgett from the Division of Surgery and Interventional Science at不most people, exercise is key to reducing blood pressure, rather than less strenuous (剧烈的)forms of movement such as walking. The good news is that whatever your physical ability, it内doesn't take long to have a positive effect on blood pressure. What's unique about our exercisevariable is that it includes all exercise-like activities, from running for a bus to a short cycling线trip, many of which can be added into daily routines. For those who don't do a lot of exercise,walking did still have some positive benefits for blood pressure. But if you want to change封your blood pressure, putting more demand on the cardiovascular system through exercise willhave the greatest effect. "弥28. What did the study focus on?A. The amount of daily exercise.B. Effect of movements on blood pressure.C. Factors controlling blood pressure.D. The type of health devices.29. Which activity is most effective for reducing blood pressure?B. Sitting.C. Cycling.A. Sleeping.D. Standing.30. What may Dr Jo Blodgett agree with?A. Short walks have no impact on blood pressure.B. All types of movements reduce blood pressure equally.C. Only more strenuous activities are better for blood pressure.D. Twenty. minutes of extra exercise a day could lower blood pressure.【高一英语第5页（共10页）】· 25 - 241A ·