A ______ is a block of glass with three or more sides that breaks up white light into the different colours of the spectrum.

试卷相关题目

• 1The minister ______ the latest crime figures as proof of the need for more police.

  A.cited

  B.rejected

  C.excited

  D.criticized

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• 2They had a regard for me from the time of my first ______ in their house.

  A.location

  B.lodging

  C.address

  D.residence

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• 3The noise of the machinery ______ the words of the factory manager.

  A.covered

  B.suppressed

  C.drowned

  D.deadened

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• 4The lecture ______ from prehistory to modern times and gave the audience much to think about.

  A.covered

  B.included

  C.ranged

  D.dealt

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• 5The poor old man is so ______ that he can scarcely walk.

  A.crude

  B.benefit

  C.adept

  D.decrepit

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• 6For people with hearing difficulties telephones with volume controls provide the best ______ .

  A.answer

  B.response

  C.result

  D.solution

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• 7After the children put up Christmas decorations, the classroom ______a holiday appearance.

  A.took up

  B.took on

  C.took off

  D.took down

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• 8A scientific hypothesis can only be ______ by indisputable facts ,i.e. , by evidence derived from actual observation and experiment.

  A.claimed

  B.exposed

  C.continued

  D.confirmed

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