检查胰腺的体位以仰卧位最常用,当胃肠气体多,胰腺显示困难时,有利于胰腺显示的体位是:()
A.左侧卧位
B.右侧卧位
C.半卧位
D.坐位
E.俯卧位
参考答案:D
It _________ that I met an old friend of mine on my way home.[ ]
A. took place
B. happens
C. happened
D. was happened
我国在南极地区建立了科学考察站:①长城站②中山站,其位置是[ ]
A.均在南极圈内
B.①在南极圈内,②在南极圈外
C.都在南极圈外
D.①在南极圈外,②在南极圈内