托业考试

根据网考网考试中心的统计分析，以下试题在2017/9/8日托业考试习题练习中，答错率较高，为：94%
【单选题】There are lots of interesting tourist sites, souvenir shops, and restaurants ______ walking distance of the conference center.

• (A) on
• (B) at
• (C) across
• (D) within