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第1题

---- _________ is the pen----It’s black ____________ red.
· What color; and
· How color; and
· What color; or
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第2题

The maipurpose of this passage is _________.( )
· to look back to the early days of computers
· to explaiwhat tech
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第3题

The present problem with computers is that _________.( )
· computers will one day take over the world from man
· c
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第4题

The author advises those dealing with computers to _________.( )
· use them for business purpose only
· be reasona
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