Agriculture was a step in human progress ______ subsequently there was nothing comparable until our own machine age.

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问题 Agriculture was a step in human progress ______ subsequently there was nothing comparable until our own machine age.

选项 A、to which
B、signal
C、from which
D、in which

答案B

解析

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考博英语

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Agriculture was a step in human progress ______ subsequently there was nothing comparable until our own machine age.

考博英语

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Johnusedtobesuchacomputerbuffthathespentalargepartofhisincome______hiscomputerwheneveranewCPUwasintrodu

MrAbu,thelaboratoryattendant,cameinfromtheadjoiningstoreandbrisklycleanedtheblackboard.HewasaretiredAfrican

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Inaworldwhereinformationisaflood—______toeveryone,andwherenothingissecretorproprietary—theonlyorganizationsand

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Whatisthe______ofgoingbyboatwhentheplanecostsnomoreandisquicker?

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