[C]professionals tend to welcome amateurs into the scientific community
[D]amateurs have national academic societies but no local ones
53.The author writes of the development of geology to demonstrate _________.
[A]the process of specialization and professionalisation
[B]the hardship of amateurs in scientific study
[C]the change of policies in scientific publications
[D]the discrimination of professionals against amateurs
54.The direct reason for specialization is _________.
[A]the development in communication
[B]the growth of professionalisation
[C]the expansion of scientific knowledge
[D]the splitting up of academic societies
Passage 2
A great deal of attention is being paid today to the so called digital divide-the division of the world into the info(information) rich and the info poor. And that divide does exist today. My wife and I lectured about this looming danger twenty years ago. What was less visible then, however, were the new, positive forces that work against the digital divide. There are reasons to be optimistic.
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