Question

【题目】 April 1 China announced that it would build the Xiongan New Area in Hebei province.

A. On B. In C. At D. To

Answer 1

【答案】A

【解析】试题分析：句意：在四月一日，中国宣布在河北省建立雄安新区。具体到某一天用介词on。故选A。