Greenisanimportantcolorinnature．Itisthecolorofgrassandtheleavesontrees．Itisalsothecolorofmostgrowingplants．

Sometimes，theword“green”meansyoung，freshandgrowing．Forexample，agreenbornissomeonewhohasnoexperience．Inthe15thcentury，agreenbornwasayoungcoworanoxwhoseborns（角）hadnotyetdeveloped．Acenturylater，agreenbornwasasoldierwhohadnoexpericnceinwar．Bythe18thcentury，agreenbornhadthemeaningithastoday-apersonwhoisnewinajob．

Someonewhoisgoodatgrowingplantsissaidtohaveagreenthumb（大拇指）．Theexpressioncomesfromtheearly20thcentury．Apersonwithagreenthumbcanmakeplantsgrowquicklyandwell．TheGreenRevolution（绿色革命）isthenamegivensomeyearsagotothedevelopmentofnewkindsofriceandothergrains．Itwastheresultofhardworkbyagriculturalscientistswhohadgreenthumbs．

Greenisalsothecolorusedtodescribethepowerfulfeeling．Jealousy（嫉妒）．Thegreeneyedmonsterisnotadangerousanimalfromouterspace．Itisanexpressionusedabout400yearsagobytheBritishwriterWilliamShakespeareinhisplay“Othello”．Itdescribestheunpleasantfeelingwhensomeonehassomethinghewants．

Inmostplacesintheworld，agreenlightisasignal（信号）tomoveahead．Ineverydayspeech，agreenlightmeansapproval（赞成）tocontinuewithaproject．

51．Anewsoliderwascalledagreenborninthe___century．

A.15th B.16th C.18th D.20th

52．Apersonwithagreenthumb___．

A．isgoodatgrowingplants

B．reallyhasagreenthumb

C．hasnoexperienceinwar

D．isnewinajob

53．Amanmaymeetthegreeneyedmonsterif___．

A．heseesadangerousanimal

B．hecan’tgetsomething

C．hereadsasadplay

D．hisfriendgetsaprizethathewants

54．Thispassagedoesn’tmentionthehistoryoftheexpression“___”．

A．agreen

B．agreenborn

C．thegreeneyedmonster

D．agreenlight

55．Whichwouldbethebesttitleofthepassage？___

A．Green，thecolorofgrassandtrees

B．Thestoriesaboutthecolor“green”

C．Green，asignofapproval

D．Differentmeaningsof“green”