118. Genetic engineering sometimes entails plant or animal genes’ getting spliced into other species’ DNA, either to improve crop yields or for warding off insects or disease. A. plant or animal genes’ getting spliced into other species’ DNA, either to improve crop yields or for warding off B. plant or animal genes that get spliced into the DNA of other species, either for improving crop yields or the warding off of C. the splicing of plant or animal genes into other species’ DNA, to either improve crop yields or to ward off D. splicing plant or animal genes into the DNA of other species, either to improve crop yields or to ward off E. splicing of plant or animal genes into the DNA of other species, for either the improvement of crop yields or to ward off 正确答案是D,也却是D最符合语意.但是 entail splicing是什么形式?是动词entail后面固定跟ing形式吗?
另外,还有几个一直没有搞明白的问题,但是一下子找不到例题了。 1、破折号里可以用句子吗?还是跟同位语一样,用n 修饰 n? 2、白勇语法里说“比较从句的主语和谓语跟主句的主谓相同时,可以全部省去,常常保留做状语的介词短语或状语从句” 这句话到底对不对,因为之前遇到好几个题,都是要求不出it was之类的主谓。 3、make的用法,以前看到过一段汇总的,记在哪里的找不到了-没记在脑子里都是白搭:( |