The passage tells us that proof of life on Mars would ________.

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• 1By saying “With Mars the scientific stakes are arguably higher than they have ever been” (Line 1, Par

  A.4), the author means that ________.A.with Mars the risks involved are much greater than any previous space ventures

  B.in the case of Mars, the rewards of scientific exploration can be very high

  C.in the case of Mars, much more research funds are needed than ever before

  D.with Mars, scientists argue, the fundamental interests of science are at issue

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• 2What is the main goal of sending human missions to Mars、

  A.To find out if life ever existed there.

  B.To see if humans could survive there.

  C.To prove the feasibility of large-scale space ventures.

  D.To show the leading role of science in space exploration.

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• 3At present, a probable inducement for countries to initiate large-scale space ventures is ________.

  A.international cooperation

  B.scientific research

  C.nationalistic reasons

  D.long-term pro fits

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• 4According to the passage, the chief purpose of explorers in going to unknown places in the past was ________.

  A.to display their country’s military might

  B.to accomplish some significant science

  C.to find new areas for colonization

  D.to pursue commercial and state interests

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• 5About the future of the arts of reading the author feels ________.

  A.upset

  B.uncertain

  C.alarmed

  D.pessimistic

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• 6If you want this painkiller, you’ll have to ask the doctor for a ________.

  A.transaction

  B.permit

  C.settlement

  D.prescription

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• 7The ________ form childhood to adulthood is always critical time for everybody.

  A.conversion

  B.transition

  C.turnover

  D.transformation

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• 8It is hard to tell whether we are going to have a boom in the economy or a ________.

  A.concession

  B.recession

  C.submission

  D.transmission

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• 9His use of color, light and form quickly departed from the conventional style of his as ________ he developed own technique.

  A.descendants

  B.predecessors

  C.successors

  D.ancestors

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• 10Failure in a required subject may result in the ________ of a diplom

  A.A.refusal

  B.betrayal

  C.denial

  D.burial

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