攻破新gre逻辑阅读 每日一练NO.30

　　参加了首场新版gre考试的考生都觉得语文部分的题难了，这主要是由于新gre逻辑阅读部分的内容考生还是有点不习惯，或是没有准备充足。那么，接下来的几天，小编将个大家整理一些新gre逻辑阅读的练习题，希望考生能从平日的练习中总结规律，找到解题技巧。

　　As a tool for public health policy, the epidemiological study of disease has one major advantage over experiments studying the effects of toxic substances on animals: there is never any call for extrapolating inferences across species in epidemiology.

　　Which of the following can be inferred from the passage above?

　　A.In epidemiology, extrapolating inferences across species is only an auxiliary tool.

　　B.Epidemiology is a very precise science.

　　C.In epidemiology, human populations are studied directly.

　　D.Toxicological experimentation on animals is more expensive than are epidemiological studies.

　　E.Toxicological experimentation on animals yields results less quickly than do epidemiological studies.