题目

A survey was carried out on the death rate of those who were infected by SARS,  ________were surprising. A. as results   B. which results   C. the results of it       D. the results of which 答案：D 解析: the results of which 等于whose results，是非限制性定语从句。用纯种的高秆(DD)抗锈病(TT)小麦与矮秆(dd)易染锈病(tt)小麦培育矮秆抗锈病小麦新品种的方法如下,有关叙述正确的是(　　)A. 此育种方法可以获得具有新性状的植株B. 符合生产要求的品种基因型为dTC. 通过④过程处理后,得到的植株是可育的,而且能稳定遗传D. 如果F1自交,那么F2矮秆抗锈病的植株中能稳定遗传的占1/16