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2012年大學英語四級聽力模擬訓練(17)

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  Questions 29 to 31 are based on the passage you have just heard.
  29. [A] It is a method often used by people who cannot speak.
  [B] It can tell something that words cannot express.
  [C] It can be used to talk with people who cannot hear.
  [D] It is less used than words.
  30. [A] Less eye contact suggests distance in relation.
  [B] The longer one looks at you, the more interest he has in you.
  [C] There is more eye contact between people who like each other.
  [D] Shorter eye contact shows more interest in what one is talking about.
  31. [A] It is a sign of one’s friendliness.
  [B] It is a sign of one’s unfriendliness.
  [C] It makes people feel happy.
  [D] It makes people feel uncomfortable.
  Passage Three
  Questions 32 to 35 are based on the passage you have just heard.
  32. [A] Universities in the United States
  [B] The Academic Year
  [C] The Quarter System
  [D] The Semester System
  33. [A] Four regular terms.
  [B] Three regular terms and one summer term.
  [C] Two regular terms and two summer terms.
  [D] One regular term and three summer terms.
  34. [A] September.
  [B] Summer semester only.
  [C] At the beginning of any quarter.
  [D] At the beginning of the academic year.
  35. [A] They allow students to graduate early.
  [B] They provide more options for admission.
  [C] They are long enough to cover the course material.
  [D] They last eleven weeks.
  Section C
  Directions: In this section, you will hear a passage three times. When the passage is read for the first time, you should listen carefully for its general idea. When the passage is read for the second time, you are required to fill in the blanks numbered from 36 to 43 with the exact words you have just heard. For blanks numbered from 44 to 46 you are required to fill in the missing information. For these blanks, you can either use the exact words you have just heard or write down the main points in your own words. Finally, when the passage is read for the third time, you should check what you have written.
  注意:此部分試題在答題卡2上;請在答題卡2上作答。
  Part III Section C
   One of the genes that protects us from cancer may also help delay aging, according to a new study.
   The findings could also one day lead to new drugs that prevent or fight cancer while (36) healthy youth and life span, said Manuel Serrano, a researcher at the Spanish National Cancer Research Centre, who worked on the study.
   Serrano said researchers (37) engineered mice to have an extra copy of a key cancer-fighting gene called p53 and found it also played an important role in delaying aging.
  "Everyone agrees that the aging is produced by the (38) of faulty cells, " Serrano said. "In other words, p53 delays aging for exactly the same reason that it prevents cancer. "
   (39) cancer studies have shown that p53 can actually cause (40) aging symptoms by killing too many cells when it goes into (41) , but Serrano said his research strictly (42)
  the gene so that it turned on only when needed.
  The gene did their (43) job of producing a protein that kills damaged cancer cells. But the researchers found that mice with an extra copy of the genes (44)"This is the first anti-cancer gene tested for its effect on aging, " Serrano said. "The mice lived 16 percent longer in their average life span. "
  The p53 gene, when working properly, (45)
  If the gene is mutated or inactivated the control mechanism does not work.
  Serrano also said that other research has shown that mice and worms that eat less have slower metabolisms and live longer. But his study offers evidence that (46)
重點單詞   查看全部解釋    
genius ['dʒi:njəs]

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n. 天才,天賦

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check [tʃek]

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n. 檢查,支票,賬單,制止,阻止物,檢驗標準,方格圖案

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advantage [əd'vɑ:ntidʒ]

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n. 優勢,有利條件
vt. 有利于

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additional [ə'diʃənl]

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adj. 附加的,另外的

 
negative ['negətiv]

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adj. 否定的,負的,消極的
n. 底片,負

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receipt [ri'si:t]

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n. 收據,收條,收到
v. 出收據

 
benefit ['benifit]

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n. 利益,津貼,保險金,義賣,義演
vt.

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rash [ræʃ]

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adj. 魯莽的
n. 疹子,大量

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controlled [kən'trəuld]

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adj. 受約束的;克制的;受控制的 v. 控制;指揮;

 
efficiently [i'fiʃəntli]

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adv. 有效地

 
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