PresidentXiannouncedinhisspeechduringthecommemoration(庆...

问题详情：

President Xi announced in his speech during the commemoration (庆典)activities that China would cut the number of its troops ________300 thousand _______2017.

  A. to; in                   B. by; by                         C. to; by           D. by; in

【回答】

B

知识点：介词

题型：选择题