A-A+
_______ is often the case with a new idea muc
问题详情
_______ is often the case with a new idea, much preliminary activity and optimistic discussion produce no concrete proposals.
A．As
B．That
C．Which
D．What请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：A
解析：As在这句话中作关系代词，在从句中做主语，来代替整个主句，其余选项无法构成正常的主从句结构。
