下列不是卵巢肿瘤并发症的是
A．肿瘤破裂
B．盆腔感染
C．蒂扭转
D．恶性变
E．与周围组织相连
参考答案：E
— I predict it will be more difficult to find a job in the following years.
— _____. [ ]
A. That's a good idea
B. I hope not
C. That will be good for the earth
D. I'm glad to hear that
某一酶促反应速度为0.8Vm时，Km等于（）
A.[S]
B.0.5[S]
C.0.25[S]
D.0.8[S]
