题干
— Was it what he said or something that he did ______ made you cry so sadly，Sarah?
— No，not really．
A：which
B：that
C：whe
D：what
答案(点此获取答案解析）
B
A：which
B：that
C：whe
D：what
通入一定量的氯气，再向反应后的溶液中滴加KSCN溶液，结果溶液变为红色，则下列叙述正确的是( )
能确定通入氯气后的溶液中
白色沉淀，说明原溶液中的I－、F