People have the belief ______ factories should produce fewer things from raw materials, ______the supply is growing smaller and smaller.

A．which; that

B．that; of which

C．that; whose

D．which; whose

厌氧菌败血症的临床特点是（）

A.常有原发的基础病，多为混合感染及医院内感染

B.最多见的致病菌为脆弱类杆菌

C.易并发血栓性静脉炎及迁徙性脓肿

D.预后良好

E.易并发肺炎，婴幼儿患者尤为常见