【正确答案】:
SINCE THE 1970S, RADICAL CHANGES HAVE TAKEN PLACE IN THE INTERNATIONAL ECONOMIC SITUATION.
【题目解析】:本题考查主语的转换。此处理解为“急剧的变化发生在国际经济形势下”更符合英语表达习惯,即“radical changes have taken place in the international economic situation.”
SINCE THE 1970S, RADICAL CHANGES HAVE TAKEN PLACE IN THE INTERNATIONAL ECONOMIC SITUATION.