Tom kept quiet about the accident _____lose the job.

A．so not as to

B．so as not to

C．so as to not

D．not so as to

血管神经性水肿与肉芽肿性唇炎鉴别要点是（）

A.口唇肿胀明显

B.泛红发亮

C.稍硬，有弹性

D.无糜烂，溃疡等损害

E.起病急骤，最多2日内肿胀消退