寻常狼疮的实验室检查中,阳性率最高的是()
A.组织病理检查
B.PPD实验
C.胸部X线检查
D.结核杆菌培养
E.结核杆菌DNA-PCR检查
参考答案:A
To keep healthy, Professor Wade _ cycling as a regular form of exercise after he retired.[ ]
A. took up
B. picked up
C. carried out
D. took on
《管规》规定,铁路各系统之间的()极其()可以通过旅客列车和行李车免费运送。