单选题 The singularly ______ restaurant is usually crowded with patrons.
A. acquainted
B. solicited
C. diverse
D. popular

【正确答案】 D
【答案解析】中级问题 常有回头客的餐馆是“受欢迎的”餐馆。
[高频词语] be acquainted with 与……熟悉 solicit a proposal 提出一个建议(计划、提案)