Lewis Latimer’s inexpensive method of producing carbon filaments (i)______the na

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问题 Lewis Latimer’s inexpensive method of producing carbon filaments (i)______the nascent electric industry by making electric lamps commercially (ii)______.

选项

答案 B，E

解析 retard减速，transform改变，provoke激起。答案选B。unfledged无经验的，viable可行的，prohibitive禁止的。答案选E。

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Lewis Latimer’s inexpensive method of producing carbon filaments (i)______the na

Theavailabilityofcarbondioxideisanessential(i)______forplantlife,while

Somescientistsarguethatcarboncompoundsplaysuchacentralroleinlifeon

Afterpeoplebegantomakethetransitionfromgatheringfoodtoproducingfood,

Thegeniusofthescientificmethodisthatit(i)________thedictumofAristot

Biologistknowthatsomemarinealgaecancreatecloudsbyproducingthegasdim

Biologistknowthatsomemarinealgaecancreatecloudsbyproducingthegasdim

Theavailabilityofoxygenisanessential(i)____foranimallife,whilecarbon

Anexampleofanillegitimatemethodofargumentistolump(i)____casestogeth

Growinggrapesingreenhousescontainingairenrichedwithcarbondioxidein

Nowadaysweareproducingmoreandmorerubbish.Whydoyouthinkthisi

Whataniceday!Howaboutthethreeofus______awalkintheparknearby?（20

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