皮样、表皮样囊肿的特征性表现是（）。

A.生长缓慢

B.边界清楚

C.无自觉症状

D.多见于儿童、青少年

E.触诊似面团样，坚韧而有弹性

After having followed the thief for half an hour, they           him in a large department store.    [ ]

A. lost the sight    

B. caught sight    

C. out of sight      

D. lost sight of