下列属于真性肿瘤的是()
A.牙瘤
B.蔓状血管瘤
C.牙龈瘤
D.牙源性钙化上皮瘤
E.侵袭性纤维瘤病
参考答案:D
--- I’m very pleased_____ you here;when and how did you come?
--- I took a lift this morning.
A.to see
B.of seeing
C.seeing
D.having seen
参与体温调节的组织器官不包括()。
A.内分泌腺
B.皮脂腺
C.皮肤血管
D.骨骼肌
E.汗腺