Itseemslikeeverydaythere’ssomenewresearchaboutwhetherourfavoritedrinksaregoodforus.Onedaysciencesaysaglassofredwineadaywillhelpuslivelonger.Thenextdaymaybenot.Itseemsjournalistsareprettyinterestedinwineresearchandthesamemightbesaidforcoffee.Nowthere’sbeenalotofresearchintowhethercoffee’sgoodforourhealth.“Theresultshavereallybeenmixed”admitsNealFreedmanwholedthecoffeestudyandpublishedhisfindingsinamedicaljournalrecently.“There’sbeensomeevidencethatcoffeemightincreasetheriskofcertaindiseasesandthere’salsobeenmaybemorerecentevidencethatcoffeemayprotectagainstotherdiseasesaswell.”

Freedmanandhiscolleaguesundertookthebiggeststudyyettolookattherelationshipbetweencoffeeandhealth.Theyanalyzeddatacollectedfrommorethan400000Americansaged50to71participatinginthestudy.“Wefoundthatthecoffeedrinkershadamodestlylowerriskofdeaththanthenon-drinkers”hesaid.Here’swhathemeansby“modestly”:thosewhodrankatleasttwoorthreecupsadaywereabout10percentor15percentlesslikelytodieforanyreasonduringthe13yearsofthestudy.Whentheresearcherslookedatspecificcausesofdeathcoffeedrinkingappearedtocuttheriskofdyingfromheartdiseaselungdiseaseinjuriesaccidentsandinfections.

NowFreedmanstressedthatthestudydoesn’tprovecoffeecanmakepeoplelivelonger.Astudylikethiscanneverproveacause-and-effectrelationship.Allitcanreallydoispointresearchersintherightdirectionforfurtherinvestigation.Andevenifitturnsoutthatcoffeeisreallygoodforyouscientistshavenoideawhy.

11.Accordingtothefirstparagraphreporterswouldliketoknowtheresearchfindingsof　.

A.tea B.beer C.alcohol D.coffee

12.AccordingtothepassagewhichofthefollowingisTRUE?

A.Freedmanandhiscolleagueshired40000Americanstocollectdata.

B.AboutfourhundredthousandAmericansworkedforFreedman’steamfulltimefor13years.

C.PeoplewhotookpartinFreedman’sresearchareabout50to70yearsold.

D.Peoplewhoare50to70yearsoldseldomdrinkcoffee.

13.Accordingtotheauthorscientists　.