The reason why these developments did not happen before was(that)_____. A.the city imported enough foreign oil for its major downtown buildings B.the federal government didn't approve the necessary money for the construction C.not given D.St. Paul is colder than New York
A.A.the B.the C.not D.St.
【参考答案】
C 解析：题目问：那些发展为什么以前没有发生?通过文章内容可知，对于那些发展为什么以前没有发生的原因在文章中并没......