A.connectionB.fileC.entityD.destination
A. connection
B. file
C. entity
D. destination
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Each machine supporting TCP has a TCP transport entity, either a library procedure, a user
A. calls
B. interfaces
C. links
D. produces
We all believe that modem technology can make life better because it makes everything faster. But by (11)______ everything up,we suffer losses we have not yet learnt to know. Our day begins with speedy urges:the alarm rings and you jump (12)______ bed,You take a quick shower. Then you wake the kids and (13) ______ them through breakfast so they won't miss the bus. At the dining table,you swallow some slices of bread with a cup of tea. When everything (14)______ ,you hurry to the car,thinking of the things you would buy from the supermarket on the way (15)______ . Driving 20 minutes in the busy traffic,you reach your workplace,rushing into the building and (16)______ up the stairs three at a time,arriving at your desk with seconds to spare. You take (17)______ deep breaths. Then,you instantly remember that the (18)______ you didn't finish last night must be faxed to Beijing by 10 o'clock in the morning.
Yet it seems that the (19)______ we go,the further we fall behind. Not only in the literal sense of not getting done what we set out to do, (20)______ at a deeper level. It has come to the point where my days feel like an Olympic marathon.
(11)
A. speeding
B. setting
C. waking
D. looking
To be inspired by other people's creativity,children should______.
A. write ideas
B. make up stories
C. buy good notebooks
D. visit museums,libraries,and science centers
SMTP使用端口(68)传输邮件报文,报文采用(69)格式表示。
A. 20
B. 21
C. 23
D. 25