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【英语】高三英语阅读理解题20套(带答案)及解析
一、高中英语阅读理解
1．阅读理解
Mayscietiststodayarecovicedthatlifeexistselsewhereitheuiverselifeprobably
muchlikethatoourowplaet.Theyreasoithefollowigway.
Asfarasastroomerscadetermie,theetireuiverseisbuiltofthesamematter.Theyhave
oreasotodoubtthatmatterobeysthesamelawsieverypartoftheuiverse.Therefore,itis
reasoabletoguessthatotherstars,withtheirowplaets,wereborithesamewayasour
owsolarsystem.Whatwekowoflifeoearthsuggeststhatlifewillarisewherevertheproper
coditiosexist.
Liferequirestherightamoutadkidofatmosphere.Thiselimiates(除去)allthoseplaets
itheuiversethatareotaboutthesamesizeadweightastheearth.Asmallerplaetwould
loseitsatmosphere;alargeroewouldholdtoomuchofit.
Lifealsorequiresasteadysupplyofheatadlight.Thiselimiatesdoublestars,orstarsthat
flareupsuddely.Olysiglestarsthataresteadysourcesofheatadlightlikeoursuwould
qualify.
Fially,lifecouldevolve(进化)olyiftheplaetisjusttherightdistacefromitssu.Witha
weakersuthaourow,theplaetwouldhavetobeclosertoit.Withastrogersu,itwould
havetobefartheraway.
Ifwesupposethateverystaritheuiversehasafamilyofplaets,thehowmayplaets
mightsupportlife?First,elimiatethosestarsthatareotlikeoursu.Nextelimiatemostof
theirplaets;theyareeithertoofarfromortooclosetotheirsus.Theelimiateallthose
plaetswhichareotthesamesizeadweightastheearth.Fially,rememberthattheproper
coditiosdootecessarilymeathatlifeactuallydoesexistoaplaet.Itmayothav
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