. — Did Peter fix the computer himself?

— He __________, because he doesn’t know much about computers.

A．has it fixed

B．had fixed it

C．had it fixed

D．fixed it

全院综合性监测是（）

A.连续不断地对所有临床科室的全部住院患者进行监测

B.连续不断地对所有临床科室医务人员进行监测

C.连续不断地对所有门诊患者进行监测

D.进行医院感染病例监测

E.进行有关危险因素的监测