It is a bad habit to leave the office without _____ the lights.[ ]

A. putting out

B. putting on

C. taking off

D. turning off

下列哪项检查结果表示乙型肝炎的传染力最强

A．HBsAg(+)

B．抗-HBs(+)、抗-HBc(+)、抗-HBe(+)

C．抗-HBc(+)、HeAg(+)、抗-HBe(-)

D．抗-HBs(+)

E．抗-HBs(+)、抗-HBe(+)