单项选择题

It can be inferred that dinosaurs' low-oxygen adaptation _________.

A．was unique in evolution
B．evolved out of the low-oxygen environment hundreds of million years ago
C．is hard to explain
D．caused their extinction
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单项选择题
From the passage we learn that _________.
A．scholarship will be a sheer private communication among scholars
B．the authorship will have to be shared by many collaborators in the world
C．scholarly writing can be a public event with the involvement of many scholars
D．scholarly writing can be a dynamic process and it will be more difficult to have a final result
单项选择题
According to the passage, it can be concluded that _________.
A．electronic publishing will eventually take the place of traditional journals
B．the process of scholarship will change greatly in a world of electric networks
C．electronic publishing is becoming the predominant means of scholarly communication
D．scholarly skywriting will be the most important skill for most scientists
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