关于类风湿性关节炎的临床特征不正确的是()。
A.腕关节肿痛
B.远端指间关节肿痛
C.掌指关节肿痛
D.近端指问关节肿痛
E.四肢关节对称性肿痛
参考答案:B
水族馆里水生动物多种多样,可谓“鱼龙混杂”。请运用你的“火眼金睛”,指出下列哪一组是真正的鱼类
①娃娃鱼 ②鲍鱼 ③海马 ④章鱼 ⑤河豚 ⑥中华鲟 ⑦鲸鱼 ⑧带鱼
A.①②③④
B.①③⑦⑧
C.③⑤⑥⑧
D.②④⑥⑧
Zhang Hua was glad that people _______ each other.[ ]
A. can help
B. is able to help
C. could help
D. could be able to help