男性，50岁，触及腹部包块3周。诊断（）
A.结肠癌
B.肠结核
C.溃疡性结肠炎
D.正常腹平片
E.肠梗阻
参考答案：A
We hoped that the bird had found some friendly person, landed on his shoulder, ______．
A．expected to love and care for
B．expecting to love and care for
C．expecting to be loved and cared for
D．to expect to be loved and cared for
危害因素主要包括哪些方面？
