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9．非组蛋白染色体蛋白负责30nm纤丝高度有序的压缩。

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2．AIDS病毒的遗传物质是______。

SECTION CNEWS BROADCAST
In this section,you will hear several news items.Listen to them carefully and then answer the questions that follow.
Questions 21 and 22 are based on the following news. At the end o f the news item,you will be given 10 seconds to answer the questions.
Now, listen to the news.
The Dow closed down at
[A] 180 point 2.
[B] 3,805.
[C] 5,549.
[D] 50 point 1.

此听力MP3下载地址：http://www.shangxueba.com/share/p3301345.html
SECTION B INTERVIEW
In this section you will hear everything ONCE ONLY. Listen carefully and then answer the questions that follow. Mark the correct answer to each question on your coloured answer sheet.
According to Chitra, _____ characters are considered to be not well depicted.
[A] imaginary
[B] lifeless
[C] unexciting
[D] emotionless

建设单位要求施工单位压缩合同约定的工期的，最轻的处罚是责令限期改正，并处（）的罚款。

A. 2万元以上l0万元以下
B. 10万元以上20万元以下
C. 20万元以上50万元以下
D. 50万元以上