- Did you see the boys yesterday afternoon?  

- Yes. I saw them ________ the fence when I passed. [ ]

 A. climb

B. climbed

C. to climb

D. climbing

患者女性，25岁，转移性右下腹痛一天。入院体检:体温39.7℃，呼吸30次/分，心率122次/分，血压98/55mmHg，神志模糊，面色苍白，呼吸有酮味，右下腹压痛明显。

术中ECG监测发现T波改变，应即刻查血浆()

A．Na+

B．Ca2+

C．K+

D．Mg

E．Cl-