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Take control of your health by learning these four numbers. They’ll help with everything from losing weight to protecting your heart.

Your daily calorie needs

This is not technically a measurement, but it can have a huge influence on your health. Most women need 2,000 calories a day for good health, and men generally need about 2,550. One way to work out your daily calorie needs is to multiply (乘以) your weight in pounds by 13 to 15, depending on your activity level. But roughly, that’s 300 to 400 calories for breakfast, 500 to 600 for lunch, and 600 to 700 for dinner. Trying to lose weight? Eat about 500 calories less.

Your waist size

Waist size is one of the best ways to measure whether your weight is affecting your heart health. When body fat is packed into your abdomen (腹部),your risk of heart attack increases. For women, health risk begins to rise when your waist is more than 35 inches. For men, risk increases with a measurement when your waist is over 40 inches.

 Your blood pressure

Blood pressure rises and falls normally during the day. When it remains high, you have high blood pressure and this carries a higher risk or heart disease and stroke.

A reading of 140/90 mm Hg or more is considered high, and if it’s between 120/80 and 139/89, you may still be at risk and should be taking steps to prevent the development of high blood pressure.

Your morning pulse rate

Your pulse rate is the number of times your heart beats in one minute. A normal resting pulse rate is 60 to 90 beats per minute. People who are fit tend to have lower resting pulse rates because their heart muscles are in good shape. But if you don’t exercise regularly and your heart rate is lower than the normal range, tell your doctor—it could be a sign of heart disease.

71. How can you control daily calories if you decide to lose weight?

      A. Eating around 2,000—2, 500 calories

      B. Having fewer than 500 calories.

      C. Cutting down about 500 calories from amount.

      D. Taking in a little fewer calories than the total amount

72. When your waist size becomes larger than the figures given in the text, ________.

      A. you are surely unhealthy                     B. you should try to reduce your waist

      C. you should go on a strict diet              D. the chance of heart disease rises

73. What should you do if your blood pressure is 128/83 mm Hg?

      A. Take measures to stop it going high.           B. Leave it as it is as there was no risk.

      C. Measure the blood pressure regularly.  D. Go to see a doctor for advice.

74. Which of the following is true of a resting pulse rate?

      A. The slower it is, the healthier.           B. The more exercise you do, the slower it is.

     C. Don’t worry if it is lower than normal.   D. Regular exercise can make it slower.

75. What might be the best title of this text?

      A. Healthy living style              

B. The secrets of your body

      C. What are your body functions          

D. Healthy numbers you need to know

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D.Schools with academic subjects should be abolished.
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A.Computers should be selected to take over many jobs.

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C.Jobs should not be assigned by systematic selection.

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This defence of excellence and opportunity would disappear if external examinations were taken away,and the bright child from a poor family would be a prisoner of his or her school’s fame(名誉),unable to compete for employment with the child from the favored schoo1.

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A. computers should be selected to take over many jobs

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