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题库 / Prep2007E1-SC-148
In contrast to some fish eggs requiring months to incubate, the Rio Grande silvery minnow produces eggs that hatch in about 24 hours, yielding larvae that can swim in just three to four days.
some fish eggs requiring months to incubate
some fish, whose eggs require months to incubate
some fish that have eggs requiring months to incubate
the requirement of months of incubation for some fish eggs
requiring months of incubation, as some fish eggs do
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actually, no, it's not essential. the "in contrast to some" already covers that base.
for instance, consider the following:
in contrast to some other restaurants in the area, Les Jardins only serves beer and wine, not hard liquor.
--> this sentence ALREADY implies that "some other restaurants" serve hard liquor. therefore, if you're going to add that reference for emphasis, you should make it a nonessential modifier:
in contrast to some other restaurants in the area, which serve a range of hard spirits, Les Jardins only serves beer and wine, not hard liquor.
for the same reason, you want commas around this modifier. if you don't have them, the sentence actually becomes redundant!
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