240. After our country’s entry into WTO, our agricultural products, such as ______ and so on are facing more and more challenge.

A．foodstuffs, fruits, cotton

B．foodstuffs, textile, hand-made goods

C．fruits, cotton, hand-made goods

D．textile, fruits, cotton

与原发性肺脓肿发病有关的因素是

A．误吸

B．呼吸道防御功能降低

C．病原菌

D．鼻咽口腔化脓病灶

E．糖尿病