气管开放性损伤可出现（）

A.咳嗽及咯血、呼吸困难、气肿、局部疼痛

B.疼痛、吐血或呕血、气肿

C.颈部血肿、神经受压、脑缺血等

D.空气逸出、刺激性咳嗽、呼吸困难

E.吞咽痛、吐血、呕血、皮下气肿、颈部可见食物及唾液溢出

According to the new classical model, a reduction in current taxes that is financed by government borrowing will most likely increase:（）

A. household saving but not real interest rates.

B. real interest but not household saving.

C. both household saving and real interest rates.