上述哪项为新生儿肺透明膜病表现（）

A.出生后6小时内出现呼吸困难，发绀进行性加剧，甚至呼吸衰竭

B.呼吸不规则，阵发性发绀，啼哭后发绀改善

C.复苏后呼吸减慢

D.气促，口吐泡沫

E.出生后短时间内出现气促，可伴呻吟，发绀，病情恢复快

Fair and(1)competition in govemment procurement around the world is good business and good public policy.Competitive pricing,product(2)and performance improvements result from competitive practices and help ensure that government authorities get the best(3)for the public they serve.

空白（2）为（）

A.recession

B.innovation

C.crisis

D.ability