单选题 Abraham Lincoln insisted that ______ not just on mere opinion but on moral purpose.
【正确答案】 B
【答案解析】与advise,ask,beg,decide,demand,deserve,desire,insist,intend,maintain,move,order, propose,recommend,request,require,suggest,urge等表示意见、建议、命令、请求、要求、劝告、愿望,需要等含义的动词相关的名词性从句中,谓语要使用动词原形或"should+动词原形”,如:Gadfly insisted that the work should be finished by the middle of June.牛虻坚持必须在6月中旬之前把工作做完。