Although schistosomiasis is not often fatal, it is so debilitating that it has become an economic drain on many developing countries. (A) it is so debilitating that it has become an economic (B) it is of such debilitation, it has become an economical (C) so debilitating is it as to become an economic (D) such is its debilitation, it becomes an economical (E) there is so much debilitation that it has become an economical
看了很多讨论贴也没有说清楚到底so as to 能不能倒装,C选项错误的原因是因为其时态没有has become好,还是其倒装结构有问题?? 又是倒装。。我就要死在倒装上了。。。