A chemist can _the oxygen from hydrogen in water.

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• What can be used to measure the percentage of oxygen inside a chain locker?（）

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• A: Where can I take the bus, please?  B: The bus stop is over there. A: ________ thanks

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• A: Where can I take the bus, please? B: The bus stop is over there. A: ________ thanks

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• The pulmonary artery carries oxygenated blood.______

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• A bluish-purple discoloration of skin and mucous membranes usually resulting from a deficiency of oxygen in the blood is termed ____.

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• The only vein in the body that carries oxygenated blood is ____.

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• __ ___ can get a better view of the game than the participant.

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• The buyer can lodge a claim to the following parties EXCEPT ______.

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• ______ retain their fluid state when exposed to oxygen, but when squeezed into thin joints that block the oxygen, they set up into hard, strong adhesives.

  A) Hot-melt adhesives B) Loss-of solvent adhesives C) Anaerobic adhesives D) Two-part mix adhesives

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• The meaning that can be found in the dictionary is the______meaning of a word.

  A．connotative B．cultural C．iconic D．denotative

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• The two elements ,______water is made up are the gases oxygen and hydrogen.

  A．that B．which C．of which D．with which

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• The medicine is on sale everywhere. You can get it at ________ chemist’s.

  A) each B) some C) certain D) any

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• The two elements______water is made are oxygen and hydrogen.

  A．that B．which C．of which D．with which

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• What is one way the professor mentions that chemists can help with art restoration？

  A．By re-creating the pigments and binding agents used by artists of earlier eras B．By removing pigments and binding agents that dissolve paintings over time C．By creating protective coatings of paint that do not damage original paintings D．By developing ways to safely remove paint added by previous restorers 此题为多项选择题。

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• ______the window,you can get a beautiful scene of the garden.

  A．Looking at B．Looking after C．Looking through D．Looking into

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• The river is the kind in ___ a boy can bathe.A.which

  B.where C.there D.that

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• Is oxygen the only gas______helps fire burn？

  A．that B．/ C．which D．it

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• From the story we can draw a conclusion that______.

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• According to the passage, the pressure on a building during a tor nado can be relieved by______.

  A．opening the windows B．closing the windows C．strengthening the roof and walls D．using a fan

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• Brushing stimulates the skin and the tissues underneath so blood can flow more easily and more oxygen can reach the brain.

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• The doctor _a tube in the patient’s nose for oxygen（）

  A．inserted B．reversed C．guaranteed D．survived

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• A pencil－sharpener can be bought at ________.A. the stationer’s

  B.a department store C.a hardware shop D.a cafeteria

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• ___boy can work out the complex problem.A.That a bright

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