By the shop window, there are several sofas _____ people may have a rest when they finish shopping.[ ]

A. which

B. where

C. from which

D. by which

行笔要有快慢：“快”流畅而不漂浮，“慢”细致而不（）。

A.凌乱

B.夸张

C.滞呆

D.繁琐