PREP1\GWD26---请各位NN、童鞋一起来分析

Aviva0307

这篇文章读得不顺，做题也不顺，觉得怪异的地方：1.观点对比没什么标志词；2.两道问题答案了出现了conscious,说明探讨的中心是conscious；但是在文中，conscious始终出现在不怎么显眼的位置——看文章貌似争论重点是phe~和odo~是否有差别，而conscious并不是重点.


各位童鞋一起分析一下吧~NN们请来指导



一楼附上原文和正确答案；二楼是偶自己对文章的分析，不知道对不对，大家指教

Q7 to Q9

There is no consensus among

researchers regarding what qualifies a

substance as a pheromone. While most

Line agree on a basic definition of pheromones

(5) as chemicals released by one individual

of a species which, when detected by

another individual of the same species,

elicit a specific behavioral or physiological

response, some researchers also specify

(10) that the response to pheromones must be

unconscious. In addition, the distinction

between pheromones and odorants—

chemicals that are consciously detected

as odors---can be blurry, and some

(15) researchers classify pheromones as a

type of odorant. Evidence that pheromone

responses may not involve conscious odor

perception comes from the finding that in

many species, pheromones are processed

(20) by the vomeronasal (or accessory olfactory)

system, which uses a special structure in

the nose, the vomeronasal organ (VNO),

to receive chemical signals. The neural

connections between the VNO and the

(25) brain are separate from those of the main

olfactory system, whose processing of

odorants triggers sensations of smell. But

while the VNO does process many animal

pheromone signals, not all animal phero-

(30) mones work through the VNO. Conversely,

not all chemical signals transmitted via the

VNO quality as pheromones. For example,

garter snakes detect a chemical signal from

earthworms—one of their favorite foods—via

(35) the VNO, and they use this signal to track

their prey.

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Q7

It can be inferred from the passage that

in classifying pheromones as a type of

odorant, the researchers referred to in

line 15 posit that

A.pheromones are perceived

consciously

B.most pheromones are processed

by the VNO

C.most chemical signals processed

by the VNO are pheromones

D.Pheromone perception does not

occur exclusively between mem-

bers of the same species.

E.pheromones do not always elicit

a specific behavioral or physio-

logical response

answer:A

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Q8

According to the passage, the fact that

pheromones are processed by the VNO

in many animal species has been taken

as evidence of which of the following?

A.The accessory and main olfac-

Tory systems are not separate

B.Odorants and pheromones are

not distinct types of chemicals.

C.Odorants and pheromones both

elicit a specific behavioral

response.

D.Pheromones do not trigger con-

scious sensations of smell.

E.Pheromones aid animals in track-

ing prey.

Answer

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Q9

The primary purpose of the pas-

sage is to

A.compare and contrast the ways

in which the vomeronasal organ

and the main olfactory systern

process chemicals.

B.summarize the debate over the

role the vomeronasal organ

plays in odor perception

C.present some of the issues

involved in the debate over

what constitutes a pheromone

D.propose a new definition of

pheromones based on recent

research

E.argue that pheromones should be

classified as a type of odorant



Answer:C

Aviva0307

【There is no consensus among

researchers regarding what qualifies a

substance as a pheromone. 】【While most

Line agree on a basic definition of pheromones

(5) as chemicals released by one individual

of a species which, when detected by

another individual of the same species,

elicit a specific behavioral or physiological

response, some researchers also specify

(10) that the response to pheromones must be

unconscious. most认为phe~是conscious的；some researchers认为phe~是unconscious的。】【In addition, the distinction

between pheromones and odorants—

chemicals that are consciously detected

as odors---can be blurry, and some

(15) researchers classify pheromones as a

type of odorant.这派说phe~和odo~的可以视为无区别（即phe~是conscious的）//Evidence that pheromone

responses may not involve conscious odor

perception comes from the finding that in

many species, pheromones are processed

(20) by the vomeronasal (or accessory olfactory)

system, which uses a special structure in

the nose, the vomeronasal organ (VNO),

to receive chemical signals. The neural

connections between the VNO and the

(25) brain are separate from those of the main

olfactory system, whose processing of

odorants triggers sensations of smell. evidence显示phe~和odo~是不同的(即phe~是不带conscious的)】【But

while the VNO does process many animal

pheromone signals, not all animal phero-

(30) mones work through the VNO. Conversely,

not all chemical signals transmitted via the

VNO quality as pheromones. For example,

garter snakes detect a chemical signal from

earthworms—one of their favorite foods—via

(35) the VNO, and they use this signal to track

their prey.削弱上面的evidence, implicate phe~未必都是和odo~不相关的（即phe~未必都是不带conscious的）】