---Do you know whether they talked about their work or their family

---As _______matter of fact, I couldn’t hear it clearly, as they talked in ______whisper.

A．the; a

B．a; a

C．the; the

D．a; the

患儿男。4个月，因咳嗽、咳痰2天，气急伴发绀2h入院。体检：体温39．7℃、呼吸80次／min，两肺均有湿啰音，心率180次／min，心音低钝，肝肋下4cm。

该患儿最主要的护理诊断是（）

A.体温升高

B.活动无耐力

C.心排出量减少

D.低效性呼吸形态

E.有体液不足的危险