An environment (favorable) for the growth and preservation of organisms (allows for) the occurring of fossils.
答案是b处错误。请教如何改？
a为何是正确的呢？在此句中是何意思？
举报
an environment favorable for the growth = an environment (which/that is) favorable for the growth
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发表于 2006-4-11 14:20:00
