His waltzes _____ him famous all over Europe.[ ]
A. kept
B. made
C. felt
答案：B
辩证法的否定就是扬弃。 ( )
为防止输注库存血发生酸碱失衡，应每输血多少ml给予5%NaHCO3：（）
A、400ml
B、500ml
C、600ml
D、800ml
