GRE Text Completion: JiJing 1373-GRE填空机经1373题 - 1K03F78F7ZC07Z4YA

Some of the areas of research covered in the collection have already attracted substantial scholarly interest, while others are more ____________, hence requiring pioneering effort to map the territory and suggest productive avenues of inquiry. A. intricate B. pristine C. parochial D. heterogeneous E. onerous