—Ijoinedinthe2017NanjingMarathon(马拉松)race,

问题详情：

 — I joined in the 2017 Nanjing Marathon (马拉松) race, _______ I couldn’t run as fast as a real athlete.

— That’s really great! You are my hero!

A. though                  B. until                         C. unless                      D. if

【回答】

A

知识点：连词

题型：选择题