题目内容：

    Until now， little research has been conducted on the association between parents' friendships and the emotional well-being of their adolescent children． A new study from researchers at the University of Missouri suggests that mothers' friendships with other adults can impact their adolescent children's relationships with their own friends， particularly the negative aspects of these relationships such as conflict and opposition．

Gary． C． Glick， a doctoral candidate at MU， and Amanda Rose， professor in the Department of Psychological Sciences， studied the development of friendships and other peer relationships during adolescence and their impact on psychological adjustment． They found that adolescents may mimic the negative characteristics of their mothers' relationships in their own peer-to-peer friendships suggesting that mothers can serve as role models for their adolescents during formative years．

"Mothers who display high levels of conflict with friends may signal to their children that such behavior is acceptable， or even standard in friendships，" Glick said． "Additional findings suggest that adolescents take for granted their reactions to their mothers' conflict with adult friends which may lead to anxiety and depression．"

Previous research of this type focused on primary-aged children， but MU researchers wanted to expand their study to focus on the formative adolescent years． Youth ranging in age from 10 to 17 and their mothers were surveyed separately to measure regarded positive and negative friendship qualities in both groups． Results showed that positive friendship qualities were not always imitated by adolescents； however， negative and unfriendly relationship characteristics exhibited by mothers were much more likely to be copied by the youth studied． "We know that conflict is a normal part of any relationship---whether it is a relationship between a parent and a child， or a mother and her friends---and we're not talking physical fights but oral conflicts，" Glick said． "But being exposed to high levels of such conflict generally isn't going to be good for children． Parents should consider whether they are good role models for their children especially where their friends are concerned． When things go wrong， parents should talk with their children about how to act with their friends， but more specifically， how not to act．"

1.The word "mimic" （in Para.2）means ______ ．

A. succeed B. discover

C. possess D. imitate

2.In comparison with the previous study， the new study expanded ______ ．

A. research goals B. research themes

C. research subjects D. research approaches

3.According to Glick， parents should instruct their children ______ ．

A. how to put an end to a wrong friendship

B. how to deal with a troubled friendship

C. how to avoid any conflict with friends

D. how to establish a sincere friendship

4.What does the new study find？ ______

A. Teens mirror negative features of mom's friendships．

B. Aggressive mothers ruin their children's friendship．

C. Conflicts and opposition form children's characters．

D. Parent-child relationship affects children's growth．