类人猿能进行观察学习和模仿,用手势语和人交谈,它的心理发展处于()
A.感觉阶段
B.知觉阶段
C.思维的萌芽阶段
D.前意识阶段
E.意识阶段
参考答案:C
The traditional approach __________ with complex problems is to break them down into smaller,more easily managed problems.
A.to dealing
B.in dealing
C.dealing
D.to deal
防止远中游离端义齿撬动的卡环是
A.回力卡环 B.圈形卡环 C.长臂卡环 D.对半卡环 E.RPI卡环