GRE阅读分步练习二--答案

第一题

题目信息

Some archaeologists speculate that the Americas might have been initially colonized

between 40,000 and 25,000 years ago. However, to support this theory it is necessary to

explain the absence of generally accepted habitation sites for that time interval in what is

now the United States. Australia, which has a smaller land area than the United States,

has many such sites, supporting the generally accepted claim that the continent was

colonized by humans at least 40,000 years ago. Australia is less densely populated

(resulting in lower chances of discovering sites) and with its overall greater aridity would

have presented conditions less favorable for hunter-gatherer occupation. Proportionally,

at least as much land area has been lost from the coastal regions of Australia because of

postglacial sea-level rise as in the United States, so any coastal archaeological record in

Australia should have been depleted about as much as a coastal record in the United

States. Since there are so many resource-rich rivers leading inland from the United

States coastlines, it seems implausible that a growing population of humans would have

confined itself to coasts for thousands of years. If inhabitants were present 25,000 years

ago, the chances of their appearing in the archaeological record would seem to be

greater than for Australia.

The passage is primarily concerned with doing which of the following?

•

•

Presenting an objection to a claim √

Accounting for an apparent anomaly

Outlining an alternative interpretation

Correcting a particular misconception

Questioning the validity of a comparison

本题的题型是:

•

•

•

•

•

•

•

•

主旨题 √

事实信息题/事实内容题

推断题

句子作用题

信息目的题/作者意图题

本文的内容可以概括成

•

•

•

•

•

解释一个现象

解决一个问题

对新旧两个观点进行对比

点评一个观点 √

说明一个事物

第二题

题目信息

Some archaeologists speculate that the Americas might have been initially colonized

between 40,000 and 25,000 years ago. However, to support this theory it is necessary to

explain the absence of generally accepted habitation sites for that time interval in what is

now the United States. Australia, which has a smaller land area than the United States,

has many such sites, supporting the generally accepted claim that the continent was

colonized by humans at least 40,000 years ago. Australia is less densely populated

(resulting in lower chances of discovering sites) and with its overall greater aridity would

have presented conditions less favorable for hunter-gatherer occupation. Proportionally,

at least as much land area has been lost from the coastal regions of Australia because of

postglacial sea-level rise as in the United States, so any coastal archaeological record in

Australia should have been depleted about as much as a coastal record in the United

States. Since there are so many resource-rich rivers leading inland from the United

States coastlines, it seems implausible that a growing population of humans would have

confined itself to coasts for thousands of years. If inhabitants were present 25,000 years

ago, the chances of their appearing in the archaeological record would seem to be

greater than for Australia.

The author of the passage implies which of the following about 25,000 years ago?

•

The coastline of the region that is now the United States is longer than it was 40,000

years ago.

Rivers in what is now the United States were numerous than they are now.

•

•

Australia was less densely populated at that time than was the region that is now the

United States.

Australia`s climate was significantly drier than it is now.

Global sea level was lower than it is now. √

本题的题型是:

•

•

•

•

•

•

•

主旨题

事实信息题/事实内容题

推断题 √

句子作用题

信息目的题/作者意图题

本题在原文的定位句是:

•

Some archaeologists speculate that the Americas might have been initially colonized

between 40,000 and 25,000 years ago.

•

Australia, which has a smaller land area than the United States, has many such sites,

supporting the generally accepted claim that the continent was colonized by humans at

least 40,000 years ago.

•

Proportionally, at least as much land area has been lost from the coastal regions

of Australia because of postglacial sea-level rise as in the United States, so any

coastal archaeological record in Australia should have been depleted about as

much as a coastal record in the United States. √

•

Since there are so many resource-rich rivers leading inland from the United States

coastlines, it seems implausible that a growing population of humans would have

confined itself to coasts for thousands of years.

•

If inhabitants were present 25,000 years ago, the chances of their appearing in the

archaeological record would seem to be greater than for Australia.

第三题

题目信息

Some archaeologists speculate that the Americas might have been initially colonized

between 40,000 and 25,000 years ago. However, to support this theory it is necessary to

explain the absence of generally accepted habitation sites for that time interval in what is

now the United States. Australia, which has a smaller land area than the United States,

has many such sites, supporting the generally accepted claim that the continent was

colonized by humans at least 40,000 years ago. Australia is less densely populated

(resulting in lower chances of discovering sites) and with its overall greater aridity would

have presented conditions less favorable for hunter-gatherer occupation. Proportionally, at

least as much land area has been lost from the coastal regions of Australia because of

postglacial sea-level rise as in the United States, so any coastal archaeological record in

Australia should have been depleted about as much as a coastal record in the United

States. Since there are so many resource-rich rivers leading inland from the United States

coastlines, it seems implausible that a growing population of humans would have confined

itself to coasts for thousands of years. If inhabitants were present 25,000 years ago, the

chances of their appearing in the archaeological record would seem to be greater than for

Australia.

The author of the passage implies that, in what is now the United States,

archaeological evidence of inhabitation in the period from 40,000 to 25,000 years

ago is lacking because that region is

•

had its oldest habitation sites inundated following a postglacial rise in sea level

has many resource-rich rivers that facilitated the dispersal of early inhabitants from an

initial concentration in coastal areas

was sparsely populated until about 25,000 years ago

was colonized less than 25,000 years ago √

was inhabited only by hunter-gatherers until 25,000 years ago

•

•

•

•

本题的题型是:

•

•

•

•

•

主旨题

事实信息题/事实内容题

推断题 √

句子作用题

信息目的题/作者意图题

本题在原文的定位句是:

•

Some archaeologists speculate that the Americas might have been initially colonized

between 40,000 and 25,000 years ago.

•

However, to support this theory it is necessary to explain the absence of generally

accepted habitation sites for that time interval in what is now the United States.

•

Australia, which has a smaller land area than the United States, has many such sites,

supporting the generally accepted claim that the continent was colonized by humans at

least 40,000 years ago.

•

Proportionally, at least as much land area has been lost from the coastal regions of

Australia because of postglacial sea-level rise as in the United States, so any coastal

archaeological record in Australia should have been depleted about as much as a coastal

record in the United States.

•

If inhabitants were present 25,000 years ago, the chances of their appearing in the

archaeological record would seem to be greater than for Australia. √