In 1948, three American scientists invented ____ transistor, which is ____ small electronic device to control an electric current.

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• 1Her daughter was so lovely _____ little girl that everybody in the street would smile at her at _____ first sight.

  A.a; /

  B.the; a

  C.the; the

  D./; the

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• 2The Browns have six children altogether. It is obvious that ________ little money the present job brings Mr. Brown can hardly support so large ________family like that.

  A./; the

  B.a; the

  C.a; /

  D.the; a

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• 3Dan Brown , _____ author of The Da Vinci Code，is _____ very famous American writer.

  A.a； the

  B.the； the

  C.the； a

  D.a； a

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• 4After the violent earthquake, Japan has been still in ______ trouble and the whole world seems to be at ______ end.

  A.the; an

  B.the; /

  C./; an

  D./; the

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• 5The man making _____ living by cheating the public ended up in ______ prison.

  A.a, the

  B.不填，不填

  C.a, 不填

  D.不填, the

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• 6We don 't think the experiment is ____ failure. At least we have gained ______ experience for future success.

  A.the; a

  B.a; /

  C.a; an

  D.the; the

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• 7Some researchers are finding that daydreaming may be important to ______ mental health and it is ______ good means of relaxation.

  A.the; 不填

  B.不填 ; the

  C.不填; a

  D.不填; 不填

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• 8If you don 't know that _____ failure is the mother of success, you are sure to be _____ failure in life.

  A./; /

  B.a; a

  C.a ; /

  D./; a

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• 9— ______ large number of trees have been stolen from the forest，haven 't they? —Yes. ______ number of them is 26,000.

  A.The；The

  B.A；The

  C.A；A

  D.The；/

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• 10Welcome to our online mall! If you buy ______iphone4 here, you can get a watch for _____free.

  A.a; /

  B.an; the

  C.an; /

  D.the; the

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