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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

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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.
The main sources of salt in our diet are ______.
选项 A、home-made food and packaged food
B、restaurant food and saltshakers
C、restaurant food and packaged food
D、home-made food and saltshakers
答案C
解析 根据第二段第三、四句“…to cut the amount of salt in packaged and restaurant food…Eighty percent of the salt in the average person’s diet comes from those sources…”可知，在我们的饮食中盐的主要来源是包装食品和餐馆的食物。故选C。
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