婴儿麻醉中出现恶性高热的最早临床表现是（）。

A.体温的快速升高

B.心动过速

C.皮肤发热

D.心律失常

E.碱石灰罐发热

The secretary and principal (校长) _______ at the meeting now. [ ]

A. are speaking  

B. is speaking  

C. were making a speech  

D. have a speech