题目内容

They designed the new machine with the purpose ________increasing production.


  1. A.
    at
  2. B.
    of
  3. C.
    to
  4. D.
    on
B
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相关题目

---Why is Mary so late?

---I don’t know ________．


  1. A.
    can what the reason be
  2. B.
    what the reason can be
  3. C.
    the reason what can be
  4. D.
    what can the reason be

Planting and keeping trees ________to the environment．


  1. A.
    are friends
  2. B.
    are friendly
  3. C.
    is friend
  4. D.
    is friendly

It is necessary that we ____ each subject well.


  1. A.
    should study
  2. B.
    must study
  3. C.
    shall study
  4. D.
    have to study

________ countries use more energy than ________ countries.


  1. A.
    Developed, developing
  2. B.
    Developing, developed
  3. C.
    Eastern, western
  4. D.
    Poor, rich

Stay in bed for a few days and it will ________ your headache.


  1. A.
    prevent
  2. B.
    cure
  3. C.
    treat to
  4. D.
    resist

The President's car was passing by when several bombs were ________.


  1. A.
    set off
  2. B.
    set up
  3. C.
    set out
  4. D.
    set down

All these things ________ his success.


  1. A.
    contributed to
  2. B.
    contributed at
  3. C.
    resulted to
  4. D.
    resulted from

________ satellite works is a question that many people can't answer.


  1. A.
    How
  2. B.
    What
  3. C.
    How a
  4. D.
    What a

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