问一道0501的阅读题文章已给出

aredshoeUID: 2173864

这是一道主旨题，我看通篇都是在讲florida gar的各个方面为什么答案是A而不是B呢？？谢谢各位的帮助！！！
The strangest-looking fish in the Everglades wetland region of southern Florida is
the Florida gar, whose unusual appearance includes sharp needlelike teeth that ftil a long snout. Young gars have numerous dark spots and patches on an olive to yellow, Line long, slender body. Gars darken with age so that adults appear mostly dak brown,
5   especially when seen from above. Several types of gar exist in eastern and central
North America, some of which are extremely large. The aptly named alligator gar is
occasionally mistaken for an alligator and occurs from the lower Mississippi drainage
basin to the rivers of the western panhandle of Florida. Only the relatively small Florida
gar, seldom longer than two feet, lives in the Everglades. (The much larger long-nose gar
10 as occasionally been found in the Everglades hut historically occurs only north of the
region.) As with all gars, the Florida gar is predatory and is adept at catching smaller
fish from schools by using a fast sideways snap of the jaws. It is also capable of catching
individual prey, pursuing them along the bottom or in douse tangles of vegetation. Using
a slow, stealthy approach, tins technique is effective on fish and grass shrimp.
15      Florida gars are sometimes seen in huge numbers, which is the result of low water
that confines individuals from the expanses of the marshes to limited aquatic habitats
where they remain during the dry season. At these times, gars become prey for the
alligator. The sight of a gar held in an alligator's jaws is a vision of prehistoric imagery.
In fact, gars have changed little from their ancestors that dominated Earth's waters when
20  the dinosaurs flourished; they even have primitive interlocking scales that differ greatly from those of most fish. They also have the dual ability to breathe air and water and can
be observed regularly rising to the surface of the water to renew the air in their swim
bladders. Florida gars are sometimes confused with a similarly shaped but unrelated
needlefish, which are marine but commonly enter freshwater. Needlefish are greenish,
25  bluish, or silvery and have a translucent appearance, hi marked contrast to the darker
and opaque Florida gars.

10. What does the passage mainly discuss?
(A) The different types of gar that live in North America
(B) The type of gar that is common in the Everglades region
(C) The similarities between the Florida gar and alligators
(D) The different types of fish that live in the Everglades region

minzhuUID: 142449

Several types of gar exist in eastern and central North America, some of which are extremely large. The aptly named alligator gar is occasionally mistaken for an alligator and occurs from the lower Mississippi drainage basin to the rivers of the western panhandle of Florida

aredshoeUID: 2173864

原帖由 minzhu 于 2006-5-7 11:54 发表
Several types of gar exist in eastern and central North America, some of which are extremely large. The aptly named alligator gar is occasionally mistaken for an alligator and occurs from the lower ...

我看到这句话了，可是全文从头到尾都会看到florida gar啊！那个alligator gar仅出现一次，而且在没有提出其他种类的gar呀！

zholvUID: 2187909

不是说这个题目的答案错了吗?

aredshoeUID: 2173864

真的么？

tanithUID: 2157578

我也选B

norwalkerUID: 2191383

我也选了B

speedmiUID: 2140301

A) The different types of gar that live in North America
本人认为第一段主要讲述了不同类别的GAR, 成年,幼年, FLORIDA,ALLIGATOR, longnose(Young gars , adults , Florida gar, alligator gar, longnose gar)的特征.并没有单独地去强调Florida Gar的特性,正如第一自然段最后一句话,它也说了正如所有的Gar一样, Florida Gar....,(这是所有Gar的特征,不是Florida Gar独有的).总的来说第一段介绍了不同的Gar.

第二段第一句虽然说了Florida Gar会群体行动,但是似乎本段更偏向于分析原因.在展开原因的时候更是大篇幅的去说Gar的演变.并不是Florida Gar独有的演变特征.本段最后似乎还是不失误导性地去说了一下Needlefish 与the darker and opaque Florida Gar常常被误认.(但是还是并没有直接去说Florida Gar的特征).总的来说第二段主要是用了Florida Gar做引子讲述了Gar的演变.

B) The type of gar that is common in the Everglades region
为什么不选这个选项呢?就是本文没有说某个Gar是common in the Everglades region
(假设大家认为是 Florida Gar是common in the Everglades region)
第一段的开头句中的 strangest-looking 已经说明 Florida Gar不是common.
第二段的开头句中的 huge numbers 也不能说是common,因为前面有限定词sometimes

[ 本帖最后由 speedmi 于 2006-5-7 14:48 编辑 ]