个别乱签号调整的方法有两种（）和（）。
参考答案：向前提；向后丢
I was never_____ t o receive a _____ result from my science teacher.
A．surprised; disappointed
B．surprised; disappointing
C．surprising; disappointed
D．surprise; disappointing
嗜铬细胞瘤的临床特征不包括
A．高血糖B．持续性高血压C．高代谢D．向心性肥胖E．阵发性高血压
