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.

　　69. 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 ice-salt mixture.

　　C. A special protein keeps it from freezing.

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

　　70. What does the underlined word “it” in Paragraph 5 refer to?

　　A. A type of ice-salt mixture.

　　B. A newly found protein.

　　C. Fish blood.

　　D. Sugar molecule.

　　71. What does “glycol-” in the underlined word “glycoprotein” in the last paragraph mean?

　　A. sugar

　　B. ice

　　C. blood

　　D. molecule

　　【答案解析】

　　C

　　Tom Brennan was working in a Philadelphia office building when he noticed a black bag. The bag contained a book.

　　This chance discovery ended a 12-day search by the Library Company of Philadelphia for a historical treasure------a 120-page diary kept 190 years ago by Deborah Logan, " a woman who knew everybody in her day," James Green, the librarian told the magazine

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