下列描述错误的是（）。
A.真皮萎缩时皮肤表面纹理异常
B.糜烂愈后不形成瘢痕
C.苔藓样变常发生于慢性瘙痒性皮肤病
D.风团消退后不留痕迹
参考答案：A
环糊精系由6～12个（）以1，4-糖苷键连接的环状低聚糖化合物，其中以（）最为常用。
Which classification of hedge funds is least likely to use a short position in stock as a part of its strategy（）
A. Market-neutral funds.
B. Risk arbitrage in mergers and acquisitions.
C. Emerging-market funds.
