China’sOlympic110mhurdlesgoldmedalistLiuXiangannouncedh...
问题详情：
China’s Olympic 110m hurdles gold medalist Liu Xiang announced his retirement ______ the afternoon of April 7th, 2015.
A. on B. in C. at D. since
【回答】
A
知识点：介词和介词短语
题型：选择题
问题详情：
China’s Olympic 110m hurdles gold medalist Liu Xiang announced his retirement ______ the afternoon of April 7th, 2015.
A. on B. in C. at D. since
【回答】
A
知识点：介词和介词短语
题型：选择题
