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更多“The road is _______ to traffic due to construction.A: closedB: closeC: closingD: close ”相关问题
  • 第1题:

    He works ten hours a day, makes more than US $ 98000 a year, doesn′t 16 to take holidays, dresses 17 he pleases. He′s 18 been happier and is looking for another job. This 33-year-old white, university-educated person is the typical Internet worker, according to a study by the Industry Standard, a San Francisco-based news magazine.
    There is also a reasonable chance that his employer will arrange his dry cleaning,19 him to 20 his dog to work, offer him flee massages and give him stock options. And he still thinks people in other 21 are doing 22 .
    The typical worker, it appears, not only enjoys an income about 23 the national average but also enjoys himself. At present 2.5 million people 24 by Internet firms in the US. The 25 of the study give plenty of reasons 26 so many people think the grass is greener in Silicon Valley.
    27 after tech-stocks sharply 28 in April, 29 many start-ups, there is still mood of enthusiasm and special advantage among those still employed. So what 30 52 percent of them "very happy"? "Demanding work" is given as the main reason and "salary" is 31 close 32 . Those questioned in the study also listed working weekends and 33 holidays as signs of the pleasure of the workplaces.
    Only 13 percent were paid for 34 hours work while 14 percent put more than 12 hours work on an average day. "It wasn′t all about 35 ." wrote Mary Ann Thompson in the introduction to the study, "It was fun."
    第(29)题选

    A.closed
    B.close
    C.closes
    D.closing

    答案:D
    解析:
    考查非谓语动词。此处意思是四月份科技股急剧下跌,使得好多创业公司破产。用现在分词短语作伴随状语,故选D。

  • 第2题:

    当一个TCP连接处于( )状态时等待应用程序关闭端口。

    A.CLOSED
    B.ESTABLISHED
    C.CLOSE-WAIT
    D.LAST-ACK

    答案:C
    解析:
    TCP释放连接可以分为四步,具体过程如下:

    双方通信之前均处于ESTABLISHED状态。

    第一步:源主机发送一个释放报文(FIN=1,自身序号SEQ =x),源主机进入FIN-WAIT状态。

    第二步:目标主机接收报文后发出确认报文(ACK=1,确认序号ACK=x+1,自身序号SEQ =y),目标主机进入CLOSE-WAIT状态。此时,源主机停止发送数据,但是目标主机仍然可以发送数据,此时TCP连接为半关闭状态(HALF-CLOSE)。源主机接收到ACK报文后等待目标主机发出FIN报文,这可能会持续一段时间。

    第三步:目标主机确定没有数据,向源主机发送后,发出释放报文(FIN=1,ACK=1,确认序号ACK =x+1,自身序号SEQ =z)。目标主机进入LAST-ACK状态。

    注意:这里由于处于半关闭状态(HALF-CLOSE),目标主机还会发送一些数据,其序号不一定为y+1,因此可设为z。而且,目标主机必须重复发送一次确认序号ACK=x+1。

    第四步:源主机接收到释放报文后,对此发送确认报文(ACK=1,确认序号ACK=z+1,自身序号SEQ=x+1),在等待一段时间确定确认报文到达后,源主机进入CLOSED状态。目标主机在接收到确认报文后,也进入CLOSED状态。释放连接的过程如图1所示。

  • 第3题:

    根据以下材料,回答题
    He works ten hours a day, makes more thanUS $ 98000 a year, doesn′t 16 to take holidays, dresses 17 he pleases. He′s 18 been happier and is looking foranother job. This 33-year-old white, university-educated person is the typical Internetworker, according to a study by the Industry Standard, a San Francisco-basednews magazine.
    There is also a reasonable chance that hisemployer will arrange his dry cleaning,19 him to 20 his dog to work, offer him fleemassages and give him stock options. And he still thinks people in other 21are doing 22.
    The typical worker, it appears, not onlyenjoys an income about 23 the national average but also enjoys himself.At present 2.5 million people 24 by Internet firms in the US, The 25 ofthe study give plenty of reasons 26 so many people think the grass isgreener in Silicon Valley.
    27 after tech-stoeks sharply 28 in April,29 many start-ups, there is still mood of enthusiasmand special advantage among those still employed. So what 30 52 percent of them "veryhappy" "Demandingwork" is given as the main reason and "salary" is 31 close 32 .
    Those questioned in the study also listedworking weekends and 33 holidays as signs of the pleasure of theworkplaces.
    Only 13 percent were paid for 34hours work while 14 percent put more than 12 hours work on an average day."It wasn′t all about 35." wrote Mary Ann Thompson in theintroduction to the study, "It was fun."


    A.closed
    B.close
    C.closes
    D.closing

    答案:D
    解析:
    考查非谓语动词。此处意思是四月份科技股急剧下跌,使得好多创业公司破产。用现在分词短语作伴随状语,故选D。

  • 第4题:

    Her mother asked her to keep the windows___________and the door

    A.opened ; closed
    B.open ; closed
    C.open ; close
    D.opened ; close

    答案:B
    解析:
    “keep+宾语+宾语补足语”意为“保持某种状态”,open本身就是形容词,开着的;closed意为“关着的”。两个形容词在此处作宾补,表示状态,因此本题答案为B。

  • 第5题:

    TCP头部和UDP头部都有的字段为( );( )字段是TCP头部有,而UDP头部没有的;当一个TCP连接处于(请作答此空)状态时等待应用程序关闭端口。

    A.CLOSED
    B.ESTABLISHED
    C.CLOSE-WAIT
    D.LAST-ACK

    答案:C
    解析:
    TCP头部和UDP头部都有的字段为源端口。顺序号字段是TCP头部有,而UDP头部没有的。当一个TCP连接处于CLOSE-WAIT状态时等待应用程序关闭端口。