65.No,he didn't
66.A safety lamp.
67.In 1812
68.The Locomotion
69.Because Stephenson was responsible for many other important developments in locomotive plan.
这种文章可以先看问题再从文中找,很好做的
65.No,he didn't
66.A safety lamp.
67.In 1812
68.The Locomotion
69.Because Stephenson was responsible for many other important developments in locomotive plan.
这种文章可以先看问题再从文中找,很好做的