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
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
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
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