23. The writing brushes ____ bamboo and animal's hair.

试卷相关题目

• 1Explorer Robert Ballard searched the sunken ship---the Titanic for more than 20 years and also, with his cameras, he _____ the hole along the side of the ship which had caused it to fill with water and sink.

  A.could find

  B.managed finding

  C.succeeded to find

  D.was able to find

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• 2In order to stop poverty, the World Bank has ______ its focus to providing technical assistance and long-term loans to developing countries.

  A.fixed

  B.exchanged

  C.transferred

  D.switched

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• 3He ____ busy then; otherwise, I believe, he would have given you a hand．

  A.had been

  B.were

  C.must be

  D.was

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• 4There______ a trend that 3D films will become more popular ever since the film Avatar hit the market．

  A.has arisen

  B.arose

  C.is arising

  D.will arise

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• 5Measures have been taken to prevent accidents, but much ______ for more improvement.

  A.remains to be done

  B.is remained to do

  C.remains to do

  D.is remained to be done

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• 6The book ______forty maps, ______three of Great Britain.

  A.contains; includes

  B.is containing; including

  C.includes; contains

  D.contains; including

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• 7Many air flights _________because of the eruption of the volcano, in _______case, many passengers had no choice but to take a train.

  A.had been cancelled; which

  B.have been cancelled; what

  C.had been canceling; that

  D.have been canceling; where

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• 8—You look so young．Haven't you graduated from your university? —Yes, I_________ in the English Department of Shandong University for four years．

  A.studied

  B.study

  C.had studied

  D.was studying

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• 9. This tower _______ back to 1860s and it is still in good condition.

  A.is dating

  B.dated

  C.was dated

  D.dates

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