Rainforests ____ and burned at such a speed that they will disappear from the earth in the near future.

A．cut

B．are cut

C．are being cut

D．had been cut

关于肺结核病理变化叙述不正确的是()

A.结核病基本病理是炎性渗出、增生和干酪样坏死

B.病变初起表现为炎性渗出

C.机体免疫力强而结核菌量少、毒力弱则表现为增殖性病变，形成结核结节

D.结核菌量多、毒力强而机体抵抗力低下时，形成干酪样坏死组织

E.结核病的三种病理变化不能同时存在，其病理演变为先后出现