具有鞭毛的微生物有（）
A.幽门弯曲菌
B.炭疽芽孢杆菌
C.放线菌
D.钩端螺旋体
E.梅毒螺旋体
参考答案：A
导致腰脊柱退变或损伤的不良姿势是（）
A.站立位
B.前屈位
C.坐位
D.平卧位
E.侧卧屈曲
Jim has been looking for his dictionary for almost an hour, and Tracy forgot to tell him that David
________it ________2 hours ago.[ ]
A. took; away
B. took; in
C. took; over
D. took; on
