溶血尿毒综合征的实验室检查哪些对确诊有意义（）

A.血清总补体和C3下降

B.尿改变

C.肾功能不全

D.血小板减少

E.微血管损害性溶血性贫血

Maggie's house is next to mine. We see each other _________.[ ]

A. a number of    

B. a lot of       

C. a great deal    

D. a great many