nebillionyears. (2)Inthefourthparagraph,thewriterthinksthat_______isnecessaryforlife.A.water B.light C.air D.wind (3)Whatdoestheunderlinedword"This"standforinthelastparagraph?A.Scientistshavediscoveredanearth-lastmonth.B.Therearefarmoreearth-sthanpeoplethought.C.ProximaBisnotfarfromearthandisjustlikeourneighbor.D.TheGalaxywillbetheonlyplaceforlivingthingstolivein.(4)WhatdoesAlanBossmeanbysaying"butIexpecttostillbealivewhenithappens"?A.Hishealthisingoodstateandhe'ssurehewilllivealonglife.B.Scienceisdevelopingmuchfasterthaneverinrecentyears.C.Scientistsmaysoonfindfactthatthere's.D.Americaisfaraheadofothercountriesinspaceresearch.四、补全对话(共1题;共5分)16.(5分)在下面对话的空白处填入适当的话语(话语可以是词、短语或句子),使对话完整。A:Hi,WangHai.________?B:Notbad.Whataboutyou?A:Prettygood.I'mlearningtennisinaclub.B:Tennis?
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