59.
A new genetically engineered papaya was produced not by seed companies who have been
motivated by profit, which was the case with most genetically modified crops previously approved
for commercial use, but university and United States Department of Agriculture researchers who
allowed growers to use it free of charge.
(A) produced not by seed companies who have been motivated by profit, which was the case with
most genetically modified cropspreviously approved for commercial use, but
(B) produced not by profit motivated seedcompanies, the case with most genetically modified
crops previously approved for commercialuse, but
(C) produced not by profit-motivated seed companies, as was the case with most genetically
modified crops previously approved forcommercial use, but by
(D) not produced by profit-motivated seedcompanies, which was the case with most genetically
modified crops previously approved forcommercial use, but was produced by
(E) not produced by seed companies who have been motivated by profit, the case with most
genetically modified crops previouslyapproved for commercial use, but by
这里的插入语, as was the case with....把人搞的很糊涂,这个到底是什么意思呢?