6, These lights flickered continuously like traffic lights which have gone mad.

continuously adv. 不停止的

go mad 发疯 = run mad\ go uncontrolled

e.g. He must have gone mad to do such a thing.

7, Sparks were emitted from small black boxes and red lamps flashed on and off angrily.

on and off: 时而，不连续地

continuously: without stopping, 不停地

angrily 作者用了一种拟人的手法

8, It was rather like an exhibition of prehistoric electronic equipment.

It was rather like…=It was more like… 看起来更像