GMAT考试:高分作文模板(2)

　　Last but not least, the validity of the survey on which the argument relies is dubious in itself. The survey cited by the author is too vague to be informative. The claim doesn’t indicate who conducted the survey and when and how the survey is conducted, neither does it mention the sample size, or how the samples are selected. Until these questions are answered, the results of this survey are worthless as evidence to support that+++++

（责任编辑：申月月）