He doesn’t understand __________ so early in the morning.(A) why to start(B) why start(C) why to starting(D) why they should be start

题目

He doesn’t understand __________ so early in the morning.

(A) why to start

(B) why start

(C) why to starting

(D) why they should be start


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  • 第1题:

    I am hungry. So ______ he.

    A、does

    B、is

    C、do

    D、did


    参考答案: B

  • 第2题:

    He is a good student. He ( ) early.

    A. come always

    B. always comes

    C. always come


    正确答案:B

  • 第3题:

    已经声明了类“publicclassthimplementsrunnable”,下面哪条语句可以启动该类型的线程_________?

    A.Tht=newTh();t.start();

    B.newTh.start();

    C.Threadt=newThread(newTh());t.start();

    D.Tht=newTh();t.run();


    正确答案:C

  • 第4题:

    She likes playing the violin , but he()

    A.is not

    B.don't

    C.doesn't


    参考答案:C

  • 第5题:

    GiventhatastaticmethoddoIt()inaclassWorkrepresentsworktobedone,whatblockofcodewillsucceedinstartinganewthreadthatwilldothework?

    CODEBLOCKa:

    Runnabler=newRunnable(){

    publicvoidrun(){

    Work.doIt();

    }

    };

    Threadt=newThread(r);

    t.start();

    CODEBLOCKb:

    Threadt=newThread(){

    publicvoidstart(){

    Work.doIt();}};

    t.start();

    CODEBLOCKc:

    Runnabler=newRunnable(){

    publicvoidrun(){

    Work.doIt();

    }

    };

    r.start();

    CODEBLOCKd:

    Threadt=newThread(newWork());

    t.start();

    CODEBLOCKe:

    Runnablet=newRunnable(){

    publicvoidrun(){

    Work.doIt();

    }

    };

    t.run();


    参考答案:A

  • 第6题:

    He seldom does his homework at school on weekdays,( )he?

    A. doesn't

    B. isn't

    C. does

    D. is


    正确答案:C