单项选择题

According to the report, dust formation can be reduced when _________.

A．asbestos is damp
B．dry asbestos is employed
C．workers wear protective clothing
D．workers use asbestos in the open air
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单项选择题
By scholarly skywriting , the author means scholars _________.
A．get new ideas from discussions through electronic networks
B．have their scientific papers openly published on the Net
C．are free to express their ideas on the line
D．create, polish and publish their ideas on the line
单项选择题
According to the passage, scientific journals _________.
A．have lost their prominent position in the research community
B．will still play their due role in publishing research papers
C．will fail to keep scientific knowledge up-to-date
D．will become obsolete with the development of "scholarly skywriting"
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