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  3. A small piece of fish ’each day may keep the heart doctor off. That’ s the finding of an extensive study of Dutch men in which d

A small piece of fish ’each day may keep the heart doctor off. That’ s the finding of an extensive study of Dutch men in which d

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问题    A small piece of fish ’each day may keep the heart doctor off. That’ s the
finding of an extensive study of Dutch men in which deaths from heart disease
was more than 50 percent lower among those who consumed at least an ounce of      【S1】______.
salt water fish per day than those who never eat fish.                               【S2】______.
   The Dutch research is one of three human studies that give strong scientific
backing to the long-held belief that eating fish can provide health benefits, particular  
                                                                                        【S3】______.
to the heart.
   Heart disease is the number-one killer in the United States, with more than
550,000 deaths occurred from heart attacks each year. But researchers previously      【S4】______.
have noticed that the incidence of heart disease is higher in cultures that con-        【S5】______.
sume more fish than Americans do. There are fewer heart disease deaths, for ex-
ample, among the Eskimos of Greenland, who consume about 14 ounces of fish a
day, and among the Japanese, which daily fish consumption averages more than 3          【S6】______.
ounces.
   For 20 years, the Dutch study followed to 852 middle-aged men,20 percent of       【S7】______.
whom ate no fish. At the start of the study, the average fish consumption was
about two-third of an ounce each day with more men eating lean fish than fatty         【S8】______.
fish. During the next two decades, 78 of the men died from heart disease. The fe-
west deaths were among the group who irregularly ate fish, even at levels far lower     【S9】______.
than those of the Japanese or Eskimos. This relationship was true regardless other     【S10】______.
factors such as age, high blood pressure, or blood cholesterol(胆固醇) levels.
选项
答案was→were
解析 一致问题。此处was的主语为deaths，为复数形式，所以系动词应当用were。
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