题干

以下有关基因重组的叙述,正确的是(    )

A:姐妹染色单体间相同片段的交换导致基因重组

B:非同源染色体的自由组合能导致基因重组

C:基因重组导致纯合体自交后代出现性状分离

D:同卵双生兄弟间的性状差异是由基因重组导致的

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B

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Dear Mr. Smith,

    I am seeking an opportunity to work with World Destiny as a Computer Systems Manage. My professional experience and my awareness of your high reputation and great achievements have led me to want to work for World Destiny.

    Since 1998 I have focused on computer-system design and training. As Systems Administrator for Newport Museum for the past two years, I have directed accounting, capital campaign and publication production. We designed the system from scratch, developing all applications, policies, procedures, and training programs. I was well prepared for such a challenge by my previous positions as a Systems Support Specialist and MicroComputer Assistant for the Imperial Corporation of America.

    Over the years, I have worked with Novell, using programs including dBase, Wordstarand Microsoft Word. This familiarity with a variety of hardware and software has helped me to get up to speed on nearly any computer with a minimum training period.

    Additional experience in other fields also adds my value to World Destiny. As a Market Research Coordinator for Cushman & Wakefield of California, I not only researched and maintained(维护)a comprehensive database of Silicon Valley, but also produced statistical and written reports that support Cushman & Wakefield' reputation. Previously, I organized companywide annual sales meetings for Qualogy, Inc.

    Mr. Smith, while this experience more than qualifies me to join any number of successful companies, it is my personal goals that lead to my interest in being part of the World Destiny team. I believe my computer, promotional, and organizational skills, fueled by my beliefs, make World Destiny and me right for each other. Can we arrange an interview at your earliest convenience? I will call within the next week to arrange a meeting.

Sincerely,

Beth Henning