( )progress helps to relieve scarcities is a fact accepted by all economists.
考试:=$ecms_gr[fenlei]?>
科目:=$ecms_gr[kemu]?>(在线考试)
问题:
A:Technological
B:That technological
C:Although technological
D:There is technological
答案:
解析:
【解析】分析句子可知,本句是主系表结构:主语是( )progress helps to relieve scarcities 从句,系动词是is,表语是a fact,句尾accepted by all economists表达是过去分词短语作后置定语,修饰限定前面的fact,将四个选项代入空格比对分析:A项代入,缺乏主语从句引导That; B项恰弥补A项的缺憾,是正确项;C项的Although是让步状语从句引导词,引导的从句在句中作状语,而非主语,故错;D项代入,是无效表达。