PP67 •Africa’s black rhino population in the mid-1970’s numbered about 2,000, ten times the estimated population of 2,000 in 1997.
A.Athe estimated population B.Bthat of their estimated population C.Cmore than the population’s estimated amount D.Dmore black rhinos than their population estimate E.Emore than that of their population’s estimated amount
answer: A Why not C? pp68 • •The cottontail rabbit population in Orange County, California, has increased unchecked in recent years as a result of the removal of the native fox population and the clearing of surrounding woodlands.
A.Ayears as a result of the removal of B.Byears as a result of removing C.Cyears, resulting from the removing of D.Dyears, which is result of removing E.Eyears, which is a result of the removal of
Eyears, which is a result of the removal of
answer: A why not C?  | 
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发表于 2008-10-16 14:53:00
