Weallknowthatlyingiswrong．（52）

　　We all know that lying is wrong．（52）___ A recent study shows that telling fewer lies helps people physically and mentally．

　　"Each week for ten weeks，110people aged from 18to 71were tested to see the relationship between the number of lies they told and their health，"said Anita Kelly，a professor at the University of Notre Dame in Indiana．"（53）___，"said Kelly．

　　Researchers divided the people into two groups．Group A was told to avoid telling any lie for any reason to anyone．They may omit （忽略） the truth，refuse to answer questions，and keep secrets，but they can't say anything that they know are not true．Group B was not told anything like this．

　　Over the study period，when people in Group A told fewer lies in a week than they did in other weeks，they experienced fewer health problems such as sore throats and headaches．Professor Linda Stroh said，"（54）___"

　　The results of past research show that each American tells about 11lies a week．In both groups，when people lied less during a week，they reported better physical and mental health during that period．

　　"It's certainly a good thing to have people be more honest，"said Robert Feldman of the University of Massachusetts，Amherst．"（55）___"

　　根据短文内容，从下列选项中选出能填入文中空白处的最佳选项，选项中有一项为多余选项．

　　A．When they lied more，their health declined

　　B．When you find that you don't lie，you have less stress．

　　C．It is good for you to tell lies and it's helpful to keep you healthy．

　　D．It may improve our mental health，but I don't think it can improve our physical health．

　　E．But do you know that it is bad for both your physical（身体的） and mental （心理的） health？