大全93 和95

ballpark

93．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
很容易选出a, 但是我的问题是，一定要用现在完成时，表示对现在造成的影响吗？在c中用一般时一定不可以吗？c到底错在哪里？是so的倒装语序还是时态？

95。Although some officials noted that using machines for farming in China costs more than traditional hand cultivation, the mechanization of farming in the village of Long Bow doubled the corn yield while the previous year’s costs were cut in half.
(A) mechanization of farming in the village of Long Bow doubled the corn yield while the previous year’s costs were cut in half
(B) mechanization of farming in the village of Long Bow doubled the corn yield while cutting costs to half those of the previous year
(C) mechanization of farming in the village of Long Bow doubled the corn yield as cost were cut to half of the previous year’s
(D) farming mechanization in the village of Long Bow doubled the corn yield as it cut in half the previous year’s costs
(E) farming mechanization in the village of Long Bow doubled the corn yield while costs were cut to half that of the previous year
b中的those of 是不是指costs ，怎么感觉cut costs to half those of the previous year 怪怪的

ballpark

没人理我，是不是我的问题太蠢了

chipmunk

93) It's not appropriate to use 倒装语序 here. If a sentence starts with 'although', it should explicitly show the main subject right after it. Of course you could use present tense in the sentence, but this is not something you should focus on.

95) Yes, "those of" refers to 'costs'