1. Libraries made education possible, and education in its turn added to libraries; the growth of knowledge followed a kind of compound-interest law, which was greatly enhanced by the invention of printing.
要点：从内容上分析，which修饰 “the growth of knowledge”
2. If they can each be trusted to take such responsibilities, and to exercise such initiative as falls within their sphere, then administrative overhead will be low.
3. There are probably no question we can think up that can’t be answered, sooner or later, including even that matter of consciousness.
4. The curtain was rung down in that phase of history, at least, by the sudden invention of the hydrogen bomb, of the ballistic missile and of rockets that can be aimed to hit the moon.
5. Studies of the Weddell seal in the laboratory have described the physiological mechanisms that allow the seals to cope with the extreme oxygen deprivation that occurs during its longest dives, which can extend 500 meters below the ocean’s surface and last for over 70 minutes. (三个定语从句)
6. The renaissance of the feminist movement began during the 1950’s led to the Stasist school, which sidestepped the good bad dichotomy and argued that frontier women lived lives similar t the lives of women in the East.