She _____ be at home because I saw her here just now.                                                                         [ ] 

A.doesn't                                                          

B.mustn't                                                          

C.can't                                                            

D.needn't

诊断糖尿病的主要依据是（）

A.空腹血糖测定

B.糖化血红蛋白测定

C.尿糖测定

D.血胰岛素水平测定

E.OGTT