高等继续教育 / 基础英语II
正确率：100%
题型描述: 单选题
This is why the certainty and severity of punishment must go down ＿＿＿＿＿＿＿＿ the crime rate goes up.
A.as
B.when
C.since
D.while
This is why the certainty and severity of punishment must go down ＿＿＿＿＿＿＿＿ the crime rate goes up.
A.as
B.when
C.since
D.while
参考答案：
佳题速递：