Question

【題目】When 18thcentury scientists first came across Australia’s platypus (鴨嘴獸)，they thought it was a trick.It is not surprising that the platypus made people confused.This funnylooking animal has feet and is a kind of warmblooded mammal(哺乳動物)．

While other mammals usually keep their blood at around 37 degrees，the platypus has a lower body temperature of 32 degrees.As to its appearance，the platypus’ mouth is not really like the duck’s; its mouth actually looks a bit softer.The platypus closes its eyes when swimming instead of watching its hunters.It uses its mouth to pick up outside information made by the creatures underwater.

Strangest of all，the platypus is a mammal that can lay eggs.And there is only one other kind of mammal that can lay eggs，the echidna(針鼴鼠) of Australia.Both the platypus and the echidna lay soft shelled eggs，and both feed their young with their own milk that comes out of their skin.These animals also walk in a way that is similar to crocodiles (鱷魚)，with legs on the sides of their bodies rather than under them.

Though pretty in a special way，the platypus is actually one of the few mammals that are poisonous.A male platypus has knifelike bones on its back legs which have enough poison to kill a dog.

The platypus has the honor of being one of the oldest mammals in the world.Until the early 20thcentury，it was hunted for its fur，but it is now protected.Although the platypus is easily influenced by pollution，it is not under any immediate threat.

【1】What can we learn about he platypus?

A．It has a lower body temperature than other mammals.

B．It only closes its eyes when underwater.

C．It’s the only poisonous mammal in the world.

D．It feeds its young on wild animal meat.

【2】Which of the following is NOT used as a comparison in the passage?

A．The crocodile.

B．The echidna.

C．The duck.

D．The dog.

【3】The characteristics of the platypus that have been described in the passage include________．

a．the color of its skin

b．the way it gets information

c．its walking pose

d．its strange appearance

A．b－c－d

B．a(chǎn)－b－c

C．a(chǎn)－c－d

D．a(chǎn)－b－d

【4】We can learn from the last paragraph that the platypus is________．

A．hunted for its meat

B．in danger of extinction

C．endangered because of air pollution

D．wellprotected now

Answer 1

【答案】【1】 A

【2】 D

【3】 A

【4】 D

【解析】【1】細(xì)節(jié)理解題。根據(jù)第二段第一句可知鴨嘴獸的體溫比其他哺乳動物較低，正確答案為A。根據(jù)第二段倒數(shù)第二句可知鴨嘴獸在水中會閉上眼睛，B與文意不一致；由第四段第一句可知鴨嘴獸不是唯一有毒的哺乳動物，故C有誤；根據(jù)第三段第三句可知母鴨嘴獸用乳汁喂養(yǎng)后代，D項錯誤。

【2】細(xì)節(jié)理解題。第三段最后一句提到鴨嘴獸和針鼴鼠像鱷魚一樣爬行，故A項是一個比較對象；第二段第二句提到鴨嘴獸的嘴不完全像鴨子，可知C項是一個比較對象；第三段提到針鼴鼠和鴨嘴獸的一些共同特征，故B項是一個比較對象；第四段最后一句只提到鴨嘴獸的毒素足以殺死一條狗，但沒有拿鴨嘴獸和狗作比較，故D項不正確。因此答案為D。

【3】細(xì)節(jié)理解題。文章第二段最后一句提到了鴨嘴獸獲取信息的途徑；第三段最后一句提到了鴨嘴獸的走路姿勢；第二段第二句提到了鴨嘴獸的外表。故b、c、d三項均符合文意，故答案為A。文中第三段第三句提到母鴨嘴獸靠體內(nèi)分泌的乳汁喂養(yǎng)后代，但沒有提到鴨嘴獸的皮膚顏色，故a不正確。

【4】細(xì)節(jié)理解題。根據(jù)最后一段最后兩句可知鴨嘴獸從前被捕獵者們獵取皮毛，但現(xiàn)在是受保護(hù)動物，它的生存沒有受到直接威脅，A項錯誤；雖然鴨嘴獸易受污染影響但并沒提到空氣污染使它們?yōu)l臨滅絕，故B項和C項也不對。