58. The period in which man learnt to make tools of iron is called the Iron Age.
人类学会用铁制造工具的时代称为铁器时代。
59. I haven't seen you for ages.
我好久没见到你了。
60. Anxiety ages us.
忧虑催人老。
61. He came here two years ago.
他两年前来到这里。
62. I thought it was a reasonable proposal, but he didn't agree.
我觉得这是个合理的建议，但他不同意。
63. We agreed to leave at once.
我们同意立即离开。
64. The witnesses' statements just don't agree with each other.
几个证人的陈述并不一致。
65. A dictionary is an invaluable aid in learning a new language.
在学习一种新语言时，词典是非常有用的工具。
66. We were greatly aided in our investigation by the cooperation of the police.
我们在调查的过程中得到警方的大力协助。