02-09-35 02-09-46 阅读

atonalcadenza

请教

35. The fact that the "land is largely the site of erosion" (line 7) is significant because
A). erosion is less destructive than sedimentation
B). fossils are most common in areas subject to erosion
C). erosion contributes to the destruction of skeletal remains
D). few organisms live in areas that experience extensive erosion

原文：
The beds of ancient lakes were also excellent sites for rapid burial of skeletal remains of
freshwater organisms and skeletons of other animals, including those of early humans Ancient
(10)swamps were particularly plentiful with prolific growths of vegetation, which fossilized in
abundance. Many animals became trapped in bogs overgrown by vegetation. The environment of

答案：D  我选：C 文章通篇讲化石，就是生物的后事，D讲的却是生物还或者时候的事，原文也没有提到生物是否合适在这里生存。

46. It can be inferred from paragraph 3 that chipmunks do not aid in the dispersal of oak trees
because
A).they store their acorns where they cannot germinate
B). they consume most of their stored acorns
C). their stored acorns are located and consumed by other species
D). they cannot travel the long distance required for dispersal

原文：
(15)And are therefore of no benefit to the trees. Flying squirrels, chipmunks, and mice are
Also unlikely to promote tree dispersal--- whose behavior of caching (hiding) acorns below
The leaf litter often promotes successful germination of acorns --- and perhaps blue jays,

答案：A  
原文讲得很清楚“promotes successful germination of acorns”，和A矛盾。

谢谢。另请问，为什么基本上没有问阅读的帖子？

happytoni

楼主能把原文发一次吗

zhbeaner

46题我也有同样的疑问。四个选项中找不到想要的答案。

原文如下：

Question 41-50

Naturalists and casual observers alike have been struck by the special relationship

between squirrels and acorns (the seeds of oak trees). Ecologists, though, cannot observe

These energetic mammals scurrying up and down oak trees and eating and burying acorns

without wondering about their complex relationship with trees. Are squirrels dispersers

(5) and planters of oak forests or pesky seed predators? The answer is not simple. Squirrels

may devour many acorns, but by storing and failing to recover up to 74 percent of them

(as they do when seeds are abundant), these arboreal o\rodents can also aid regeneration

and dispersal of the oaks.

Their destructive powers are well documented. According to one report, squirrels

(10)destroyed tens of thousands of fallen acorns from an oak stand on the University of

Indiana campus. A professor there estimated that each of the large while oaks had

Produced between two and eight thousand acorns, but within weeks of seed maturity,

Hardly an intact acorn could be found among the fallen leaves.

Deer, turkey, wild pigs, and bears also feed heavily on acorns, but do not store them,

(15)And are therefore of no benefit to the trees. Flying squirrels, chipmunks, and mice are

Also unlikely to promote tree dispersal--- whose behavior of caching (hiding) acorns below

The leaf litter often promotes successful germination of acorns --- and perhaps blue jays,

Important long-distance dispersers, seem to help oaks spread and reproduce.

Among squirrels, though, there is a particularly puzzling behavior pattern. Squirrels

(20)pry off the caps of acorns, bite through the shells to get at the nutritious inner kernels,

and then discard them half-eaten. The ground under towing oaks is often littered with

thousands of half -eaten acorns, each one only bitten from the top. Why would any animal

waste so much time and energy and risk exposure to such predators as red-tail hawks only

to leave a large part of each acorn uneaten? While research is not conclusive at this point,

(25)one thing that is certain is that squirrels do hide some of the uneaten portions, and these acorn halves, many of which contain the seeds, may later germinate.

46. It can be inferred from paragraph 3 that chipmunks do not aid in the dispersal of oak trees
because
A).they store their acorns where they cannot germinate
B). they consume most of their stored acorns
C). their stored acorns are located and consumed by other species
D). they cannot travel the long distance required for dispersal

zhbeaner

等待救援！

AChao

两位参考的答案有误，正确答案是：

ＮＯ３５．Ｃ

ＮＯ４６．Ｄ

flowersforzoe

And are therefore of no benefit to the trees. Flying squirrels, chipmunks, and mice are
Also unlikely to promote tree dispersal--- whose behavior of caching (hiding) acorns below the leaf litter often promotes successful germination of acorns --- and perhaps blue jays……

我个人觉得原文似乎由逻辑问题，如果Flying squirrels, chipmunks, and mice 可以帮助种子发芽的话，又为什么 unlikely to promote tree dispersal呢？从逻辑上讲46题应该选A，D是不得已之选，不知道文章的出处。

zhbeaner

同意6楼！