可用荚膜肿胀试验鉴定的菌株是（）
A.甲型链球菌
B.粪肠球菌
C.D群链球菌
D.B群链球菌
E.肺炎链球菌
参考答案：E
The restaurant across the road caught fire last night. The police are now _____ the matter. [ ]
A. watching out
B. working out
C. looking into
D. seeing through
