Peter ________ at this job since he graduated from college.

A．is employed

B．was employed

C．has been employed

D．had been employed

老年人皮肤瘙痒症的处理正确的是（）

A.用热水烫洗止痒

B.用手或工具抓痒

C.多用碱性肥皂洗澡

D.生活力求规律，保持皮肤卫生

E.勤洗澡