Nationwide, 16 million men and women have heart disease and 5.8 million are estimated to have had a stroke. Cutting salt consumption can reduce these risks, the CDC said.

　　词汇：

　　sodium /s??d??m/ n.钠

　　potassium /p?t?s??m/ n.钾

　　calcium /k?ls??m/ n.钙

　　intake /?nte?k/ n.纳入量

　　注释:

　　1.more than twice the recommended amount：比推荐量的两倍还多

　　2.They found nearly 70 percent of U. S. adults are in high-risk groups that would benefit from a lower-salt diet of no more than 1,500 mg per day：他们发现将近分之七十的美国成年人属于高危人群,如果他们的日食盐量降至l,500毫克,则会从中受益。

　　练习：

　　1.Too much salt raises ones risk for

　　A.high blood pressure.

　　B.heart attacks.

　　C.strokes.

　　D.all of the above.

　　2.How much salt do most American adults eat per day?

　　A.No more than 1,500 mg.

　　B.Closer to 3,500 mg.

　　C.Less than 3,436 mg.

　　D.Closer to 1,500 mg.

　　3.To improve their blood pressure, people should have a diet

　　A.rich in potassium and sodium.

　　B.rich in potassium and calcium.

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