题目内容双击单词支持查询和收藏哦～
收藏
纠错
题目材料：
Approximately what was the average (arithmetic mean) decrease per year in the total government debt during the three-year period from 1973 to 1976?
-
A.$20 billion
-
B.$50 billion
-
C.$70 billion
-
D.$100 billion
-
E.$200 billion
C显示答案
