下列关于血吸虫病诊断表述中，属于正确的有（）.

A.病原学诊断是确诊血吸虫病的依据

B.粪检诊断漏检率高

C.免疫学诊断可以区分现症感染还是既往感染

D.免疫学诊断假阳性率高

E.免疫学诊断假阴性率高

Mothers holding jobs outside the home should have______schedules to make it easier to care for their children.

A. heavy
B. smooth
C. flexible
D. complex