紫癜的出血直径是()
A.直径小于2mm
B.直径大于3mm
C.直径3~5mm
D.直径大于5mm
E.直径2~3mm
参考答案:C
They are to meet their new colleague. [ ]
A. eagle
B. keen
C. ambitious
D. eager
河豚毒素有何特点?如何预防河豚毒素食物中毒事件的发生?