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题库 / OG2017V-SC-299
Once numbering in the millions worldwide, it is estimated that the wolf has declined to 200,000 in 57 countries, some 11,000 of them to be found in the lower 48 United States and Alaska.
it is estimated that the wolf has declined to 200,000 in 57 countries, some
the wolf is estimated to have declined to 200,000 in 57 countries, with approximately
the wolf has declined to an estimate of 200,000 in 57 countries, some
wolves have declined to an estimate of 200,000 in 57 countries, with approximately
wolves have declined to an estimated 200,000 in 57 countries, some
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开头的modifier是"numbering in the millions"，所以后面的wolfs应该是decline to a number，感觉这样能前后对应上。
subject是wolfs，后半部分的主体"11000 of them"还是指的wolfs，所以同位语更为合适，如果用with...的独立主格，独立主格的主体应该是除了wolfs之外的物体。
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