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tough cr from princeton (Astronomers/dust)

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by tj123 » Wed Apr 15, 2009 9:12 pm
attached.

how do you know that persisted is wrong.
i assume that created and persisted are the verbs that refer back to particles.

persisting doesnt seem to make sense.
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by nitin360 » Wed Apr 15, 2009 9:29 pm
i think created is used for atoms and molecules from explosion .. not for particles which make interstellar dust ...

b. persists .. goes against noun as it is particles so plural verb
c. persisted.... against verb tense comprise ... persisted
d.they persist
e.are persisting
d and e does not make sense as
with conjunction and persisting is more good to ears than d and e ..

please revert if i m wrong
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by Kunal_gmat » Thu Apr 16, 2009 8:57 am
Big bang governs behavior of interstellar particles - progressive
particles comprised of atoms and molecules created - past
and these particles persisting - progressive is needed here.
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