1．What is the text mainly about?

　　A．The terrible conditions in the Antarctic.

　　B．A special fish living in freezing waters.

　　C．The ice shelf around Antarctica.

　　D．Protection of the Antarctic cod.

　　解析：选B。主旨大意题。本文主要讲述了对一种能够生活在南极冰冷的海水中的鱼的研究，因此B项是文章的中心意思。

　　2．Why can the Antarctic cod live at the freezing temperature?

　　A．The seawater has a temperature of －1.88 ℃.

　　B．It loves to live in the ice­salt mixture.

　　C．A special protein keeps it from freezing.

　　D．Its blood has a temperature lower than －2.05 ℃.

　　解析：选C。细节理解题。根据文中第五段的说明可以知道：正是这种特殊的蛋白质使得这种鱼在南极海水中生活而不至于被冰冻。

　　3．What does the underlined word"it"in Paragraph 5 refer to?

　　A．A type of ice­salt mixture.

　　B．A newly found protein.

　　C．Fish blood.

　　D．Sugar molecule.

　　解析：选B。根据文中的叙述可以判断出该物质就是帮助这种鱼生活在南极海水中的神奇的蛋白质。

　　4．What does"glyco­"in the underlined word"glycoprotein"in the last paragraph mean?

　　A．Sugar.　　　　　　　　 B．Ice.

　　C．Blood. D．Molecule.

　　解析：选A。词义猜测题。根据"Because of its sugar content，it is called a glycoprotein．"这句话可以推断出前缀"glyco­"应该和sugar有关。

　　Ⅲ.完形填空

　　When I began teaching in a university，I was invited to a workshop for new professors.I had __1__ a long time learning what to teach，but not learning how to __2__ it.Somehow，my university seemed to hope a weekend spent with experienced professors would __3__ for that.My colleagues presented well­crafted(精心准备的)lectures about the tools they used.I enjoyed their __4__，but did not remember a thing they said.

At a coffee break during the lectures，finding myself __5__，I turned to a mathematics professor standing nearby.I asked him what his favorite teaching __6__ was."A cup of coffee，"he said，"I talk too much and too fast in the classroom.Students sometimes have trouble __7__ me.So when I've said __8__ that I want my students to think about，I would __9__ and take a sip