重氮化法中加入KBr的目的是加快反应速度。
参考答案:对
下列哪些是1型糖尿病的特点()
A.起病年龄早,起病急
B.发病主要与病毒感染、自身免疫有关
C.主要病变是胰岛B细胞破坏,胰岛素分泌绝对不足
D.易发生酮症
E.胰岛素治疗过程中有"蜜月期"
On one hand, tons of milk_______; on the other hand, tens of thousands of people ______hunger. [ ]
A. went bad; died of
B. went badly; died of
C. went bad; died from
D. went badly; died from