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题库 / Prep2007E2-SC-46
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.
plant or animal genes' getting spliced into other species' DNA, either to improve crop yields or for warding off
plant or animal genes that get spliced into the DNA of other species, either for improving crop yields or the warding off of
the splicing of plant or animal genes into other species' DNA, to either improve crop yields or to ward off
splicing plant or animal genes into the DNA of other species, either to improve crop yields or to ward off
splicing of plant or animal genes into the DNA of other species, for either the improvement of crop yields or to ward off
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同时注意，entail的意思的用法
例句：The work entails precision，这工作需要精确无误
an investment that entailed high risk，一项需承担高风险的投资
her father's estate was entailed on a cousin，她父亲的财产限定由一个堂兄继承。
AB的关键词在于plant or animal genes，文章想表示的是entail splicing这个事情, 错误，且A for doing和to do不能平行
C: ethie 处平行错误
D: 正确
E: ethie 处平行错误
A，to do和for doing不能平行
if you have a two-part parallel signal, such as either ... or, then the words FOLLOWING EACH PART must have the same structure.
if you have a one-part parallel signal, such as or/and, then the words locked by the parallel signal must have the same structure.
entail sth/doing sth，需要某物/某事，如：
The job entails a lot of hard work. 这工作需要十分艰苦的努力。
These plans entail great expense on us.这些计划需要我们承担大笔经费。
A，基因工程需要被分离，来提高作物产量；SVC，植物基因做分离的定语，处于第二层
D，基因工程需要分离基因A到基因B，来提高作物产量；SVOO结构，植物基因作宾语之一。
由目的状语“来提高作物产量”可知，“植物基因”作为被分离的对象、达到目标的载体，应该在句子里占据显眼位置，D优于A。
entail sth on sb
The castle and the land are entailed on the eldest son.
那城堡和土地限定由长子继承。