囊壁中含有皮肤附件结构的囊肿可能是（）
A.皮脂腺囊肿
B.皮样囊肿
C.表皮样囊肿
D.始基囊肿
E.甲状舌管囊肿
参考答案：B
Diana, ________ for months to find a job as a waitress, finally took a position at a local advertising
agency. [ ]
A. struggling
B. struggled
C. having struggled
D. to struggle
有的旅游者到某地后，希望亲友随团活动甚至到外地去旅行游览，导游人员应先征得领队和旅游团其他成员的同意。()
