军队职称英语真题汇编-阅读理解96

试卷预览

• 1The oceanographers have been perplexed by the（　）。

  A.presence of sediment on the ocean floors

  B.roughness of world'socean floors

  C.amount of sediment found on he ocean floors

  D.type of sediment found on the ocean floors

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• 2They believe that the sediment on the ocean floors is（　）。

  A.inexplicable

  B.increasing in depth more rapidly than it should

  C.greater than it should be

  D.less than it should be

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• 3Oceanographers have based their estimates of the thickness of the sediment layer on（　）。

  A.the rate which sediment accumulates

  B.the time the sediment has been accumulating

  C.the configuration of the ocean floor

  D.both A and B

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• 4Findings of the actual depth of the sediment layer indicated that it was（　）。

  A.precisely asestimated

  B.only one-half the estimated depth

  C.not more than one -fourth of the estimated depth

  D.much greater than the estimated depth

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• 5The report seems to indicate that（　）。

  A.previous estimates of the thickness of the sediment layer were too low

  B.previous estimates of the thickness of the sediment layer were too high

  C.sediment accumulates very rapidly

  D.the sediment layer is composed of pure organic matter

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