下列哪项不提示黑痣恶变()
A.迅速长大,色素突然加深
B.发生溃疡、出血
C.局部生长有毛发
D.周围出现卫星状小瘤或色素环
E.周围有淋巴结肿大
参考答案:C
—Would you mind if the window was closed?
—________. I also feel a little cold.
A.Absolutely
B.Definitely
C.Certainly not
D.Oh,I see
简述需求价格弹性与厂商销售收益之间的关系。