（）不是皮肤风团基本特征。
A、发生急骤，消退迅速
B、可呈苍白色
C、为隆起性皮损
D、不痛不痒
参考答案：D
I'm very busy today. I have _homework to do. [ ]
A. much too
B. too much
C. too many
D. many too
经营现金流入的估算应该等于（）
A、本期现销收入
B、本期销售收入总额
C、当期现收入与回收以前期应收账款的合计数
D、本期赊销额
