The news came, as expected, __________ my cousin was chosen to be a foreign aid doctor to go to Africa where people are suffering a lot from aids.

A．it

B．that

C．what

D．Which

关于血栓前状态的血液有形成分和无形成分的生化学和流变学发生的变化的描述下列哪些是正确的？（）

A.血管内皮细胞坏死

B.血小板和白细胞被激活或功能亢进

C.凝血因子含量减低或活性减弱

D.血液凝固调节蛋白含量减少或结构异常

E.纤溶成分含量减低或活性减弱