Eta Carinae is hard to observe because

试卷相关题目

• 1The word "period" in Paragraph 3 means the length of time

  A.over which stars vary in brightness.

  B.for which Eta Charinae's brightening lasts.

  C.Eta Carinae takes to become a supernova.

  D.it takes the laser from Eta Carinae to travel to the earth.

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• 2Eta Carinae is now engaging in

  A.some very common behaviour.

  B.some very dull behaviour.

  C.some very frightening behaviour

  D.some very strange behaviour.

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• 3ACOG's efforts to educate women about cancer will be greatly appreciated.

  A.Right

  B.Wrong

  C.Not mentioned

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• 4Some American women are too afraid of finding cancer to undergo screening.

  A.Right

  B.Wrong

  C.Not mentioned

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• 5Some American women are just unwilling to change their lifestyles.

  A.Right

  B.Wrong

  C.Not mentioned

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• 6Astronomers are particularly interested in Eta Carinae because

  A.it is in its final stage.

  B.it is a supernova.

  C.it exploded in 1987.

  D.it is brighter than the Sun.

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• 7Which of the following statements about Eta Carinae is NOT true、

  A.It will end up as a supernova.

  B.It can be seen only through binoculars.

  C.It is the only star that sends out an ultraviolet laser.

  D.Its ultraviolet laser is brighter than that of the Sun.

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• 8The IOC is investigating its own officials for__________.

  A.running the black market

  B.secretly meeting reporters

  C.illegally selling tickets

  D.criticizing Sunday Times

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• 9The word "allegations" (Par

  A.1 ) probably means__________.A.discussions

  B.claims

  C.announcements

  D.opinions

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• 10Sunday Times reveaJed__________.

  A.details about IOC's emergency session

  B.evidence against some IOC officials,

  C.ticket prices for men's 100-meter final

  D.pricing policy of the London Olympics

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