女性，40岁，双下肢挤压伤，经初步抗休克处理后出现吸气性呼吸困难，吸纯氧未能改善呼吸。检查：无发绀，肺部无啰音，胸透无异常发现。应首先考虑诊断（）

A.输液过量

B.吸入性肺炎

C.心功能不全

D.呼吸窘迫综合征

E.下呼吸道梗阻

The traffic police stopped three trucks heavily loading with merchandise that looked as grain bags.

A．that were loading...like

B．loaded with...like

C．to load with...for

D．loaded with...for