Most scientists agree _______ was hot for at least a time.

试卷相关题目

• 1An air ship _______ by energy from the sun has been suggested.

  A.powering

  B.to power

  C.is powered

  D.powered

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• 2_______ was a planted sapling of the American redwood tree.

  A.There is one of the gifts

  B.One of the gifts that

  C.That one of the gifts

  D.One of the gifts

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• 3There is also an interest in sea horse, puffers and other salty types with shapes ____ and colors ____ than even the showiest of fresh-water fish.

  A.more strange…more bright

  B.stranger…. brighter

  C.stranger… more brighter

  D.more strange…brighter

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• 4The gas-oil contact or gas-water contact_____ the lower limit of producible gas.

  A.is

  B.are

  C.were

  D.has been

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• 5For the creatures to become oil, it was necessary that they ______ between layers of rock for an enormous length of time.

  A.been imprisoned

  B.shall be imprison

  C.should be imprison

  D.will be imprisoned

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• 6A group of scientists demanded that the federal government ____ all the studies it has founded on cloning.

  A.reveal

  B.revealed

  C.is revealing

  D.must reveal

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• 7_______ hearing is really produced in all animals by the effect of pressure is not definitely known by scientists.

  A.If or not

  B.Whether or not

  C.have never heard of

  D.had never heard of

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• 8It was something we ________.

  A.never hear of

  B.have never heard of

  C.never heard of

  D.had never heard of

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• 9“Could I borrow your bike、”“Yes, you_________”.

  A.can

  B.could

  C.may

  D.would

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• 10The passage confirms that

  A.high oil prices can be controlled if OPEC increase oil output.

  B.Bill Clinton accomplished his mission for the visit to Prince Abdullah.

  C.Abdullah made all his efforts to control oil price without considering the benefits of his own country.

  D.managing the oil market is easier said than don

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