Which of the following statements is trueof the Northern Lights、

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• 1The Northern Lights are createdwhen______

  A.atomic particles fall to the Earth and collidewith atmospheric gases.

  B.the magnetic field lines fail toreconnect.

  C.the electrons falling to the Earth shinein different colors.

  D.oxygen and nitrogen are separated from theatmospheric gases.

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• 2What happens when solar wind comes to theEarth、

  A.A protective magnetic field is formed atthe same time.

  B.It is trapped in magnetic belts around theEarth.

  C.It destroys the protective magnetic fieldsurrounding the Earth.

  D.It breaks magnetic field lines and doessevere damage to the 、、、

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• 3The solar wind comes into being as aresult of______

  A.disappearance of the Sun’s gravity.

  B.unpredictable weather of the Sun.

  C.fast flow of energy away from the Sun.

  D.a stream of particles being blown away.

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• 4Schmidt-Morand’sfavorite animal is cat .

  A.Right

  B.Wrong

  C.Not mentioned

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• 5The team is working on recreating thevision of more animals .

  A.Right

  B.Wrong

  C.Not mentioned

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• 6What is the author’s tone toward the Northern Lights、

  A.Indifferent

  B.Sarcastic

  C.Sharp

  D.Appreciative

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• 7The eye-tracker technology enables usto______

  A.change our computer screen.

  B.focus on anything that interests us.

  C.get a smartphone connected wirelessly.

  D.move an object from screen with a glanc

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• 8Why is a button needed、

  A.To minimize the cost of EyeDrop.

  B.To choose as many objects as possible.

  C.To make EyeDrop different from others.

  D.To select what we want.

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• 9The word “this” in Paragraph 6 refers to_______

  A.application of gaze-tracking inhuman-computer interaction.

  B.interaction between human and computer.

  C.combination of gaze-tracking with input ontouch devices.

  D.generalization of EyeDrop system.

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• 10Which of the following statement is trueof eye-trackers for consumer devices.

  A.They are costly.

  B.They are available.

  C.They are installed in Google Glassheadset.

  D.They are expected to come out soon.

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