带蒂息肉再次检查消失的主要原因（）
A.恶变
B.缩小
C.溃疡
D.自行脱落
E.出血
参考答案：D
–You just said you hate your brother. Why?
– He is a black sheep of the family, always _____ trouble to my family.
A．make
B．makes
C．made
D．making
对长度为n的线性表进行顺序查找，在最坏情况下所需要的比较次数为______。
A．log2n
B．n/2
C．n
D．n+1
