GRE

简答题 In the last sentence of the passage，the author probably mentions the age Of Drake’s equation to

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B．
The last sentence states：Drake’s figures，being 50 years old，have since
been superseded by more accurate predictions．The author means that sincethe figures are old，some parts of them have been recalculated．

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1 NASA now calculates that the rate of starformation in our galaxy is closerto seven per year than to Drake’s original calculation．If that were theonlychange，how would it affect Drake’s equation?

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2

select two answer choices that (1) complete the sentence in a way that makes sense and (2) produce sentences that are similar in meaning。
回答题： 
Luging，a sport inwhich you lie face up and feet first on a tiny sled，is____________dangerous；a Georgian athlete died in 2008 whilepreparing forOlympic competition．

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3 Whether newspapers survive as a medium islargely____________ on how welt they adapt to the age of social media andinstant news．

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