1. The basic causes are unknown ,although certain conditions that may lead to cancer have been      
A  identified    B  guaranteed  C  notified   D   conveyed
2.  The captain       the horizon for approaching ships.
A  scanned    B  scrutinized    C  explored   D  swept
3.  The little girl was       by the death of her dog since her affection for the pet had been real and deep.
A  grieved  B  suppressed   C  oppressed   D  sustained 来源：www.examda.com
4.  They are well     with each other since they once studied in the same university.
A  identified   B  recognized   C  acknowledged  D  acquainted
5. When he tried to make a       , he found that the hotel was completely filled because of a convention.
A  reservation   B  claim   C  mess   D  revision
6. Parents take a great interest in the      questions raised by their children.
A  nasty    B  naïve   C  obscure   D  offensive
7. The government has devoted a larger slice of its national      agriculture than most other countries.
A  resources   B  potential    C  budget   D  economy
8. The fire has caused great losses ,but the factory tried to      the consequences by saying that the damage was not as serious as reported.
A  decrease    B  subtract   C  minimize   D  degrade
9. While nuclear weapons present grave      dangers, the predominant crisis of overpopulation is with us today.
A  inevitable    B  constant   C  overwhelming  D  potential
10. Fiber-optical cables can carry hundreds of telephone conversations.
A  simultaneously  B  spontaneously   C homogeneously  D  contemporarily
11.  In today’s medical field ,little agreement exists on the      for defining mental illness.
A  legislation   B  requirement   C  criteria   D  measures
12. Parents often faced the     between doing what they felt was good for the development of the child and what they could stand by way of undisciplined noise and destructiveness.
A  junction   B   paradox    C  premise   D   dilemma
13.Bruce Stephen gripped the      wheel hard as the car bounced up and down. 来源：www.examda.com
A  stirring   B   driving  C  steering  D  revolving
14. Rumors are everywhere ,spreading fear, damaging reputations , and turning calm situations into      .
A  turbulent    B  tragic   C  vulnerable   D  suspicious
15. The younger person’s attraction to stereos cannot be explained only       familiarity with technology.
A  in quest of   B  by means of  C  in terms of  D  by virtue of
16.They were      in their scientific research, not knowing what happened just outside their lab.
A  submerged   B  drowned   C  immersed  D  dipped
17. His      was telling him that something was wrong.
A  sentiment  B  inspiration   C  hypothesis   D   intuition
18. The court considers financial      to be appropriate way of punishing him.
A  option   B  duty  C  obligation  D penalty
19. The ties that bind us together in common activity are so      that they can disappear at any moment.
A  trivial   B  fatal  C  tentative  D  feeble
20. Frankly speaking ,your article is very good except for some     mistakes in grammar.
A  obscure  B  glaring  C  trivial   D  rare
21.The old gentleman was a very     looking person, with grey hair and gold spectacle.
A   respective   B  respectable  C  respectful   D  respected
22.Astronauts are     all kinds of tests before they are actually sent up in an spacecraft.
A   bound to  B  prone to  C  subjected to  D  inclined to
23.For many patients ,institutional care is the most     and beneficial form of care.
A  persistent  B  appropriate  C  thoughtful  D sufficient
24. He wouldn’t answer the reporters’ questions ,nor would he     for a photograph.来源：www.examda.com
A  summon   B  highlight  C  pose  D  marshal
25. Mr. Smith became very    when it was suggested that he had made a mistake.
A  ingenious   B  empirical   C  objective   D  indignant
26. Among all the changes resulting from the      entry of women into the work force the transformation that has occurred in the women themselves is not the least important.
A  massive  B  quantitative   C  surplus   D  formidable来源：www.examda.com
27.It is hard to tell whether we are going to have a boom in the economy or a      .
A  concession   B  recession   C submission  D  transmission
28. We’ll be very careful and keep what you’ve told us strictly     .
A  rigorous   B  confidential   C  private   D  mysterious
29. If we     our relations with that country ,we’ll have to find another supplier of raw materials.
A  diffuse   B  diminish  C  terminate   D  preclude 
30  The detective and his assistant have begun to      the mysterious murder.来源：www.examda.com
A  look into   B  see to  C  make over  D  come through
1------10     AAADA        BCCDA
11-----20     CDCAC        CDDDC
21-----30     BCBCD        ABBCA