The death number in Saturday night’s conflicts between protesters and security forces in Thailand is 19 the number of the injured is 825.
A. before
B. after
C. when
D. while
网友回答
A. before
B. after
C. when
(答案→)D. while
解析：强调对比，用while “周六晚上抗议者与安全局在泰国的冲突，死亡人数为19，然而受伤人数为825。”