肛门直肠疾病的多发部位是（）
A.齿状线附近
B.直肠
C.肛门和肛管
D.肛垫
E.肛 * *
参考答案：A
贫血可表现为( )
A．皮肤苍白B．皮肤发红C．紫绀D．黄疸E．色素脱失
—Do you know that Jack（）a postman for about six years —Yes, I see.
A. has become
B. has turned
C. has changed
D. has been
