患者女性，48岁。体温37.9℃，关节肿痛5年，加重2个月。血尿酸水平正常，ASO阴性，PPD阴性，抗结核抗体（-）

该患者可能的诊断包括（）。

A.类风湿关节炎

B.干燥综合征

C.强直性脊柱炎

D.风湿性关节炎

E.痛风性关节炎

F.骨关节炎

G.骨关节结核

Many students do not like tostudy history(历史)．They say that there are (41) many names and dates to (42) ．But if we do not know about the (43) ，we can not understand the present well．For example，if we wish to know how men (44) to use fire，we have to know what men did (45) the past to travel at night or to keep themselves (46) in cold nights．Only a study of history will make US realize(意识到) (47) everything we do today is the result of what (48) people did in the past．

[A] read [B] make [C] write

As we (49) history，we learn many interesting (50) ．History helps US understand our present life better．