类风湿关节炎的自身抗体不包括（）
A.类风湿因子
B.抗角蛋白抗体
C.抗环瓜氨酸多肽抗体
D.抗dsDNA抗体
E.抗核周因子抗体
参考答案：D
---I don't suppose the police know who did it.
---Well, surprisingly they do. A man has been arrested and ____ now.
A．has been questioned
B．is being questioned
C．is questioning
D．has questioned
在地球上重20千克的物体在月球上重3.2千克，在地球上重8千克的物体到月球上重多少千克？
