I would appreciate ______ very much if you could change the plan a bit to make it more workable.

A．that

B．this

C．it

D．you

该病人为了进一步检查，以便尽快选择有效药物治疗，最简便、阳性率最高的试验是

A．尿培养
B．尿沉渣涂片镜检
C．尿细菌定量培养
D．内生肌酐清除率
E．X线