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题库 / OG2016-SC-34
Although schistosomiasis is not often fatal, it is so debilitating that it has become an economic drain on many developing countries.
it is so debilitating that it has become an economic
it is of such debilitation, it has become an economical
so debilitating is it as to become an economic
such is its debilitation, it becomes an economical
there is so much debilitation that it has become an economical
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不定式和从句的区别，用从句的话表示客观，状态不发生改变。用不定式强调主观动作改变了状态，此处前面的S的状态未发生改变
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