题目内容:
Prof.Barbara'sexperimentprovedthat__________. A.twogroupsatethesameamountofcalories
B.twogroupsatethesameamountofyogurt
C.the"lowfat"yogurtgroupatesignificantlymorecalorieslaterinthedaythantheothergroup
D.peopleincreasethenumberofcaloriestheyeatperdayandgainweight
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