关于血源性肺脓肿的描述，哪项不正确（）。

A.往往继发于皮肤感染，骨髓炎

B.脓毒菌栓引起肺小血管栓塞、炎症、坏死形成肺脓肿

C.常为两上肺多发病灶

D.致病菌以葡萄球菌、链球菌为主

E.有咳嗽，咳痰不多，极少咯血

It is safe to eat chicken that ________fully, but most people still dare not do that because of the H7N9 bird flu .

A．will be cooked

B．cooks

C．is cooked

D．cooked