How did it _____ that the car fell off the bridge into the river? [ ]

A. come out

B. come about

C. come across

D. come up

女，1岁2个月，咳嗽半月，无发热。结核菌素试验PPD5U，结果红硬直径20mm，X线胸片未见异常，血沉1mm/h，应如何处理（）

A.是接种卡介苗后反应，不须服药

B.以往有过结核感染，不须特殊处理

C.需用SM+INH6～9个月

D.需用INH6～9个月

E.需用SM+INH+RFP6～9月