Anewstudyshowsthatwomencanreducetheirchancesofdevelopingheartdiseaseby(1) for about three hours every week. The researchers at Harvard Medical Univer

By Kaylee

Anewstudyshowsthatwomencanreducetheirchancesofdevelopingheartdiseaseby(1) for about three hours every week. The researchers at Harvard Medical University in Boston have just reported theresults(2) the study on the New England Journal of Medicine. The study is the first to show the effectiveness sofjogging in the developing of heart disease in women.Only(3)
earlier studies have examined the effects of jogging on the heart, but nearly all have been doneonmen.Thenewstudyinvolvesmorethan72,000women(4) the ages of forty and sixty-five during a period of eight years.There searchers have found that women(5) jog at least three hours a week have a thirty to forty percent lower chance of owning a heart attack than those who donot.
1. A.by B. to C. of D.in
2. A.of B. on C. into D.in
3. A.many B. much C. a little D. afew
4. A.behind B. between C. toward D.from




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