小伙伴们，GRE考试大家复习的怎么样了呢？下面是帮考网分享的一些GRE考试阅读部分的复习资料，一起来看看吧！

问题部分：

1. Which of the following best describes the function of the highlighted sentence in the context of the passage as a whole?

A. It provides an example of the kind of problems that often complicate investigations into environmental change.

B. It call into question the reliability of the established dates for later Holocene agricultural development.

C. It describes the nature of localized agricultural developments during the later Holocene.

D. It outlines a hypothesis that draws on evidence discussed earlier in the passage.

E. It limits the scope of a particular complication mentioned earlier in the passage.

选 E

文章逻辑：

全新世后期，约 4000 年前开始，人们在研究环境改变的课题时，遇到了问题，环境改变可能是因为人类的原因，也可能是因为气候的原因，二者难以区分，或算出明确的比例。比如禾本植物的花粉增多，意味着干旱，但科学家们无法确认，是因为气候干旱，树枯死了草开始生长，还是人类的农业活动伐木垦田导致的。所谓 complication 指的就是这种说不清。

高亮句说，开始人类活动是小规模的，后来蔓延开来。可以认为是限定了 complication 程度，小规模意味着比较容易分辨，还勉强说得清，考察其他没有人类影响的地区就好，但后来人类活动范围变大了，就说不清了。

所以选 E。

2. According to the passage, which of the following is true regarding environmental changes 4,000 years ago?

A. No localized increases in grass pollen were caused by agricultural development.

B. Increases in grass pollen were at least sometimes a reflection of an increase in aridity.

C. Wholesale ecosystem changes probably resulted from agricultural development.

D. Any small-scale changes occurring then would not be detectable now.

E. Environmental change helped induce the adoption of agricultural technologies.

选 B

至少有时禾本植物花粉变多反映了干旱加剧。

A 错。如果跟农业发展一点关系都没有，根本不可能 difficult to seprate 。

C 错。也可能有气候因素。

D 错。未知信息。

E 错。因果关系说反了，是农业推广加速了环境改变，人种地不会意识到最近一千年越来越干旱了，终于适合种地了，古人不可能有这种意识。

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