Question

【題目】 Our dog Sandy is a golden retriever( 尋回犬). Once we performed an experiment to see how keen his nose was.There was one particular pile that must have had hundreds of sticks. We picked up one stick carved an X on it, walked away from the pile and then threw it back into the pile, not once but a dozen times into the pile. It was impossible for us to tell with any certainty which stick we had originally chosen. Each time he brought back that stick. It wasn't the shape or the size or the look of the stick that he used to pick it out from all the others. It was the smell we left on the stick. It is hard to imagine, but for dogs every living creature has its own distinctive smell.

The noses of people have about 5 million cells that sense smell. Dogs' noses have anywhere from 125 to 300 million cells. Moreover, these cells are closer to the surface than cells in our noses, and more active. It has been estimated that dogs such as Sandy have noses that are a million times more sensitive than ours. Clothes that we haven't worn for week,and places we've only touched lightly indicate our presence to dogs.

His ears are also remarkable. He can hear sounds that humans can't and at distances which are astonishing. It is over our head to know and understand that world. Yet we have the advantage of being able to imagine what his experience is like, though he probably doesn't think too much about how we see the world.

The environment is the world that all living things share. Living creatures are born into the environment and are part of it. Yet there is no creature who perceives (感知到) all of what is and what happens. For a dog like Sandy a book isn't much different than a stick, whereas for us one stick is pretty much like every other stick. There is no one world experienced by all living creatures.

【1】Why did the author conduct the experiment?

A.To train Sandy to pick out sticks.

B.To show how fast Sandy found sticks.

C.To prove sensitivity of Sandy's nose.

D.To teach Sandy to tell different smells.

【2】What does the author intend to do in paragraph 2?

A.Support the conclusion with numbers.

B.Summarize the previous paragraph.

C.Provide some advice for the readers.

D.Introduce a new topic for discussion.

【3】What does the underlined idiom in paragraph 3 mean?

A.Amazing.B.Difficult.

C.Reasonable.D.Inconvenient.

【4】Which of the following best expresses the author's opinion in the last paragraph?

A.Worlds to experience.

B.An environment to share.

C.No environment, no creatures.

D.One environment, many worlds.

Answer 1

【答案】

【1】C

【2】A

【3】B

【4】D

【解析】

本文是一篇說明文。作者做了一個實驗證明Sandy的鼻子非常靈敏，耳朵也非常靈敏，借此說明環(huán)境是所有生物共享的世界，不同的物種對于環(huán)境有不同的感知。

【1】細節(jié)理解題。根據(jù)第一段的Once we performed an experiment to see how keen his nose was.（我們做了一個實驗，看看他的鼻子有多尖）可知，作者做這個實驗是為了證明桑迪的鼻子很敏感。故選C。

【2】推理判斷題。根據(jù)第二段的The noses of people have about 5 million cells that sense smell. Dogs' noses have anywhere from 125 to 300 million cells.（人類的鼻子有大約500萬個可以感知氣味的細胞。狗的鼻子有1億2千5百萬到3億個細胞）可知，第二段用人類鼻子和狗的鼻子的細胞數(shù)進行對比來說明狗鼻子的靈敏度，由此判斷出，作者在第二段中用數(shù)字來支持結論。故選A。

【3】詞義猜測題。根據(jù)第三段的It is over our head to know and understand that world. Yet we have the advantage of being able to imagine what his experience is like（我們無法了解那個世界。然而，我們的優(yōu)勢是能夠想象他的經(jīng)歷是什么樣的）可知句中yet意為“然而”，跟前句是轉折關系，we have the advantage of意為“我們有……的優(yōu)勢”，所以對比前文的over our head是與之相反的意思，over our head意為“困難的”，相當于difficult，故選B。

【4】推理判斷題。根據(jù)最后一段的The environment is the world that all living things share. Living creatures are born into the environment and are part of it. Yet there is no creature who perceives all of what is and what happensThere is no one world experienced by all living creatures.（環(huán)境是所有生物共享的世界。生物出生在環(huán)境中，是環(huán)境的一部分。然而，沒有一種生物能感知一切的存在和發(fā)生。沒有一個世界是所有生物都經(jīng)歷過的）可知，任何一種生物都不能完全地體會到一個世界，由此判斷出，最能表達作者觀點的是一個環(huán)境、多個世界。故選D。