As        matter of fact,        number of young couples who plan to have a second kid is increasing rapidly.

A．the; a

B．a; the

C．a; a

D．不填；the

关于肾盂肾炎，下列哪项是错误的()

A．孕妇易感染

B．多为上行感染

C．大肠杆菌感染常见

D．尿大肠杆菌菌落计数超过1万/ml

E．尿沉渣涂片找细菌对及时选择用药有意义