分泌黏液性分泌液的腺体主要是（）。
A.腮腺
B.下颌下腺
C.舌下腺
D.唇腺
E.腭腺
参考答案：E
My friend Li Xiao knows my hometown very well because he _______ there many times with me.
A．has been
B．has gone
C．had gone
D．went
了解梗阻性黄疸部位的检查是（）
A.口服胆囊造影
B.消化道钡剂造影
C.经皮肝穿刺胆道造影
D.逆行胰胆管造影
E.经T形管造影术
