良恶性肿瘤在病理变化方面的区别不包括
A.是否浸润、有无包膜
B.是否压迫组织、阻塞管腔
C.是否出现病理性核分裂象
D.有无出血和坏死
E.异型性的大小
参考答案:B
Having a trip abroad is certainly good for the old couple, but it remains____ whether they will enjoy it.
A.to see
B.to be seen
C.seeing
D.seen
如何确认坏账?