Unit 7 单元同步测试题

E

Taking four short walks a day to lower your blood pressure may be more effective than a long walk, a new study finds.

Recently Indiana University researchers compared the effects of four 10-minute walks to one 40-minute walk in reducing blood pressure in 20 people with prehypertension.

Prehypertension is an elevated(提高的) blood pressure level that will usually progress to high blood pressure. High blood pressure is associated with heart attack, heart failure, kidney failure, stroke and blindness.

The researchers found that while the short walks and long walk decreased the participants’ blood pressure by the same amount, the effect lasted for 11 hours after the short walks, compared to 7 hours after the long walk.

“We had no idea whether the short walks would be better,” Janet Wallace, professor at the Indiana University School of Health, said in a prepared statement. “Most studies found that the long, continuous session was more effective for many variables(可变因素).”

But these findings may motivate(激发) people who cannot seem to fit long walks of activity in their schedule.

“The biggest problem for most people is that they don’t have time,” Wallace said. “You might think, ‘I don’t have the time to go to the gym or work out for 40 minutes, but I might have the time to do 10 minutes here, 10 minutes here and another 10 minutes here.’ Four 10-minute walks would be ideal.”

72. Which of the following is the best way to lower your blood pressure?

A. One long walk a day.                          B. Four short walks a day.

C. Stand still in a place.                           D. Walk all day long.

73. We can know that high blood pressure leads to the following diseases EXCEPT _____.

A. heart attack      B. kidney failure           C. stroke         D. headache

74. Most people don’t have enough physical exercise because they _____.

A. have no disease         B. have no money         C. have no time    D. have no interest

75. What’s the main idea of the passage?

A. Four 10-minute walks a day is ideal for your blood pressure.

B. High blood pressure is associated with heart attack.

C. What is the biggest problem for physical exercise?

D. Prehypertension is a dangerous disease.

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