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Test 5
Ⅰ.完形填空
Once in a blue moon there is one on New Year’s Eve.Revelers ringing in 2010 will be treated to a so-called blue moon.According to popular definition,a blue moon is the second full moon in a month.But don’t __1__ it to be blue—the name has nothing to __2__ the color of our closest celestial(天体) neighbor.
A full moon __3__ on December 2.It will appear again on Thursday in time for the New Year’s countdown.
“If you’re in Times Square,you’ll see the __4__ moon right above you.It’s going to be that brilliant,” said Jack Horkheimer,director emeritus of the Miami Space Transit Planetarium and host of a weekly astronomy TV show.
The New Year’s Eve blue moon will be __5__ in the United States,Canada,Europe,South America and Africa.For partygoers in Australia and Asia,the full moon does not show up__6__ New Year’s Day,making January a blue moon month for them.
However,the Eastern Hemisphere can celebrate with a partial lunar eclipse(月蚀) on New Year’s Eve when __7__ of the moon enters the Earth’s shadow.The __8__ will not be visible in the Americas.
A full moon occurs __9__ 29.5 days,and most years have 12.__10__,an extra full moon in a month—a blue moon—occurs every 2.5 years.The __11__ time there was a lunar double take was in May 2007.New Year’s Eve blue moons are rarer,occurring every 19 years.The last time was in 1990; the next one won’t __12__ again until 2028.
Blue moons have no astronomical __13__,said Greg Laughlin,an astronomer at the University of California,Santa Cruz.
“‘Blue moon’ is just a __14__ in the same sense as a ‘hunter’s moon’ or a ‘harvest moon’,” Laughlin said in an e-mail.
The popular definition of blue moon __15__ after a writer for Sky Telescope magazine in 1946 misunderstood the Maine Farmer’s Calendar and marked a blue moon as the second full moon in a month.In fact,the calendar __16__ a blue moon as the third full moon in a season with four full moons,not the usual three.
Though Sky Telescope corrected the __17__ decades later,
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