起重機發生火災的原因主要是由于電氣設備在運行中超過額定負荷，發生線路短路、過熱或打火花造成的。（）
1、正確正確
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MissGreenwas____$100fordrivingafterdrinking.
I’dratheryou____bytrainbecausetheweatherforecastsaidtherewouldbeheavysnowtomorrow.
Itisimperativethatstudents_____theirtermpapersontime.
John'sscoreonthetestisthehighestintheclass;（）helastnight.
Physicsisthepresentdayequivalentof____usedtobecallednaturalphilosophy,from____mostofpresentdaysciencearose.
