卫生类C级：阅读理解U. S. Eats Too Much Salt
People in the United States consume more than twice the recommended amount of salt， raising their risk for high blood pressure， heart attacks and strokes， govemment health experts said on Thursday.
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 l，500 mg per day， yet most consume closer to 3，500 mg per day.
"Its important for people to eat less salt. People who adopt a heart-healthy eating pattem that includes a diet low in sodium(钠) and rich in potassium(钾) and calcium(钙) can improve their blood pressure， " Dr. Darwin Labarthe of the Centers for Disease Control and Prevention said in a statement.
" People need to know their recommended daily sodium limit and take action to reduce sodium intake ， " Labarthe said.
The study in CDCs weekly report on death and disease used national survey data to show that two out of three adults should be consuming no more than l，500 mg of sodium per day because they are black or over the age of 40-which are considered high-risk groups.
Yet studies show most people in the United States eat 3，436 mg of sodium per day， according to a 2005 - 2006 CDC estimate.
Most of the sodium eaten comes from packaged， processed and restaurant foods. The CDC said it will join other agencies in the Health and Human Services department in working with major food manufacturers and chain restaurants to reduce sodium levels in the food supply.
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.
31. Too much salt raises ones risk for _________.
A. strokes
B. heart attacks
C. high blood pressure
D. all of the above
32. The recommended sodium intake for most U. S. adults is ________.
A. closer t0 3，500 mg per day
B. as much as 3，436 mg per day
C. no more than l，500 mg per day
D. less than 3，500 mg per day
33. A heart-healthy diet is one that contains ________.
A. a low level of sodium
B. a lot of potassium and calcium
C. no salt at all
D. both A and B
34. Nearly 70 percent of U. S. adults are in high-risk groups，________.
A. for they are inactive
B. for they are black or over the age of 40
C. for they frequently eat out
D. for they consume sodium every day
35. Packaged， processed and restaurant foods are known to be
A. good in taste
B. low in price
C. poor in nutrition
D. high in salt