Question

【题目】When 18thcentury scientists first came across Australia’s platypus (鸭嘴兽)，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(哺乳动物)．

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(针鼹鼠) 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 (鳄鱼)，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－b－c

C．a－c－d

D．a－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】细节理解题。根据第二段第一句可知鸭嘴兽的体温比其他哺乳动物较低，正确答案为A。根据第二段倒数第二句可知鸭嘴兽在水中会闭上眼睛，B与文意不一致；由第四段第一句可知鸭嘴兽不是唯一有毒的哺乳动物，故C有误；根据第三段第三句可知母鸭嘴兽用乳汁喂养后代，D项错误。

【2】细节理解题。第三段最后一句提到鸭嘴兽和针鼹鼠像鳄鱼一样爬行，故A项是一个比较对象；第二段第二句提到鸭嘴兽的嘴不完全像鸭子，可知C项是一个比较对象；第三段提到针鼹鼠和鸭嘴兽的一些共同特征，故B项是一个比较对象；第四段最后一句只提到鸭嘴兽的毒素足以杀死一条狗，但没有拿鸭嘴兽和狗作比较，故D项不正确。因此答案为D。

【3】细节理解题。文章第二段最后一句提到了鸭嘴兽获取信息的途径；第三段最后一句提到了鸭嘴兽的走路姿势；第二段第二句提到了鸭嘴兽的外表。故b、c、d三项均符合文意，故答案为A。文中第三段第三句提到母鸭嘴兽靠体内分泌的乳汁喂养后代，但没有提到鸭嘴兽的皮肤颜色，故a不正确。

【4】细节理解题。根据最后一段最后两句可知鸭嘴兽从前被捕猎者们猎取皮毛，但现在是受保护动物，它的生存没有受到直接威胁，A项错误；虽然鸭嘴兽易受污染影响但并没提到空气污染使它们濒临灭绝，故B项和C项也不对。