他们阅读一篇论文，往往先看“注释”和“参考文献”。从“注释”和“参考文献”中可以看出论文作者对论题所涉及的有关文献了解情况，特别是对有关问题研究前沿成果了解的广度和深度。 what are its limits? how nicely defined is its research dilemma? how helpful is its method