A-A+
A．These factories produced machines in the pas
问题详情
A．These factories produced machines in the past.
B．These factories produced farm tools in the past.
C．These factories manufactured bicycles in the past.
D．These factories manufactured cars tools in the past.请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：C
解析：[听力原文]
What did the factories manufacture before being converted into automobile plants?
由于四个选项的结构均为"These factories...in the past."可知问题询问这些公司过去生产什么产品。由“Factories for manufacture of bicycles and wagon bodies...these factories were converted into automobile plants.”可知这些工厂原来生产自行车和运货马车，故正确答案为C)。
