By 1860, most of the machinery in use today had been designed in an early form.

游客2025-03-17 25

问题 By 1860, most of the machinery in use today had been designed in an early form. (Passage 3)

选项

答案到1860年，现在使用的大多数机器已经有了雏形。

解析

转载请注明原文地址:http://tihaiku.com/zcyy/4001391.html

相关试题推荐

随机试题

最新回复(0)

By1860,mostofthemachineryinusetodayhadbeendesignedinanearlyform.