对细菌性痢疾来说哪项是对的()
A.潜伏期1~2天
B.通常结肠与小肠均有炎症
C.粪便中有大量单核细胞
D.近年来在临床上很少见
E.治疗菌痢,首选氯霉素
参考答案:A
In communication, a smile is usually _____ strong sign of a friendly and _____ open attitude. [ ]
A. the, /
B. a, an
C. a, /
D. the, an
—My brother is ill in hospital.
—I'm sorry ___ that.[ ]
A. hear
B. hearing
C. heard
D. to hear