机构水平的美德

-I went to see you yesterday evening. But you weren't in. Where were you then?

-I ___________ a walk by the lake with my husband.

                                                                                                                                                        [ ]

A. was having

B. am having

C. have had

D. have

重型β珠蛋白生成障碍性贫血的Hb电泳结果是（）。

A.HbA₂增加

B.HbH出现

C.HbF增加

D.HbA₂可增加，或降低，或正常

E.HbA明显减少或消失

棉制男式其他内衣

A 组：一定质量理想气体，其状态沿图中的直线 ABC 进行变化，下列说法正确的是（　　）

A．t_A=t_B=t_C

B．t_A=t_C＞t_B

C．若t _A=-3℃，则t _B=-4℃

D．若t_A=-3℃，则t_B=87℃

踝关节退行性关节病的最常见病因是（）

A.创伤后关节炎

B.化脓性关节炎

C.类风湿性关节炎

D.银屑病性关节炎

E.病毒性关节炎