咬指甲可引起被咬指甲可有()、甲刺及甲下脓肿、皮肤感染。
A.甲沟炎
B.指甲缺损
C.牙齿畸形
D.下颌畸形
参考答案:A
真性动脉瘤的最常见病因是()。
A.外伤
B.动脉粥样硬化
C.感染
D.Marfan综合征
E.遗传
He came all the way to China for promoting friendship, _____ for making money.[ ]
A. rather than
B. other than
C. more than
D. better than