根据题意得:x+3≥0x≠0,
解得x≥-3且x≠0.
故答案为x≥-3且x≠0.
The shop-assistant asked John what______. [A] did he want[B] he wanted [C] he wants
下列哪一种变化属于坏死的病理改变()
A.细胞体积肿大,胞浆内有红染颗粒
B.细胞体积缩小,胞浆内有脂褐素颗粒
C.细胞核膜破裂,染色质崩解为小碎片
D.细胞核增大,细胞核的DNA含量增加
E.细胞体积正常或稍大,出现双核