阅读理解（第3l～45题，每题3分，共15分）

　　请根据短文内容，为每题确定1个最佳选项。

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.

　　"It's 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 CDC's 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 one's 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

　　参考答案及解析

　　31．D [解析]由第一段的People in the United States consume more than twice the recom． mended amount of salt，raising their risk flor high blood pressure，heart attacks and strokes，government health experts said on Thursday．可知，A、B、C都出现了，因此选D。

　　32．C[解析]由第二段中…would benefit from a lower-salt diet of no more than 1，500 mgper day和第五段中…should be consuming no more than 1，500 mg of sodium per day…可知，每天钠的摄入量不应超过1500毫克。因此选C。

　　33．D[解析]文章第三段说到People who adopt a heart-healthy eating pattern that includes a diet low in sodium(钠)and rich in potassium(钾)and calcium(钙)can improve theirblood pressure，因此D是正确答案。

　　34．B [解析]第五段提到…they are black or over the age of 40-which are consideredhigh-risk groups，因此选B。

　　35．D[解析]第七段说Most of the sodium eaten comes from packaged，processed and restaurant foods．因此选择D。

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