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  3. What you’ ve always heard? We’ re eating way too much salt. The average American gets about 3.4 grams of sodium every day, far m

What you’ ve always heard? We’ re eating way too much salt. The average American gets about 3.4 grams of sodium every day, far m

admin2019-03-28  56
问题    What you’ ve always heard? We’ re eating way too much salt. The average American gets about 3.4 grams of sodium every day, far more than the upper limit of 2. 3 grams recommended by the USDA. The Institute of Medicine estimates that reducing sodium intake nationwide could prevent 100,000 deaths every year.
   The headlines now? It’ s time to get tough. The New York city health department recently kicked off a national effort to cut the amount of salt in packaged and restaurant food by 25 percent over five years. Eighty percent of the salt in the average person’ s diet comes from those sources, not from the saltshaker.
   But wait! The benefits of salt reduction are surprisingly murky. At least 13 studies have tried to tease out what happens to people who choose to eat salty or not-so-salty food—and the results have pointed in every direction. Some studies suggest that cutting salt protects the heart: others suggest that intense salt reduction can actually increase heart problems. What’ s needed, Dr. Michael Alderman says, is a randomized, controlled trial, in which people are put on different diets and followed for years. It’ s the only way to get a reliable answer, but it’ s never been done.
   So what should you do? Go easy on processed foods and eat more produce. Those changes will improve your diet in a variety of ways and cut the amount of sodium you consume. If your blood pressure is high, work with your doctor to control it with drugs and lifestyle changes. If your blood pressure is healthy? At this point, there’ s no convincing reason for you to count every grain.
It is stated in Paragraph 1 that our sodium intake______.
选项 A、is within the healthy range
B、is a bit over the upper limit
C、is well below the lower limit
D、is far beyond what is necessary
答案D
解析 根据第一段第二、三句“We’re eating way too much salt…far more than the upper limit of…”可知，钠的摄人量远远超出了我们身体的需求。故选D。
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