3 Difficult Qs SC from PREP 2. even native got confused

cathybai

35.   Unlike the steam locomotive, whichrequired an hour or two of firing up before it could move under its own power, the diesel locomotive couldsummon nearly full power from a cold engine almost instantly.
vs:moving under its own power, almost instantly a diesel locomotive could summonnearly full power from a cold engine.
90.   Diesel engines burn as much as 30 percentless fuel than gasoline engines of comparable size, as well as emitting far less carbondioxide gas and far fewer of the other gases that have been implicated in global warming.
vs: of comparable size, as well as emit far less carbon dioxide gas and farfewer of the other gases having– possibly because the clause beginning with “emitting” is adjectival modifying‘engines’ though the sentence on the whole IMO not that well written
93.   A study oncouples' retirement transitions found that, unlike menwho took new jobs after retiring from their primary careers, women who did sowere more likely than those who retired completely to report high maritalsatisfaction.
vs: different from
According native speakers and dictionaries, it seems like “differentfrom”= “unlike”. Any idea why pick unlike over different from?

得儿意得儿漂

35题的第二个选项，由于副词在前，应该用倒装语序吧。Almost instantly could a diesel locomotive summon...