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【简答题】
在古代社会，自然是人类的主宰，人们把自然神化，对自然顶礼膜拜，认为山有山神，河有河神，天旱求龙王降雨，神灵保佑。近代以来，随着自然科学技术的进步和工业革命的发展，人类改造自然的能力和水平不断提高，机器轰鸣田野，卫星遨游太空，人们认为自然是人类征服的对象，人类可以主宰自然。但是，随着人类活动规模的扩大，土地荒漠化、臭氧层空洞、洪水肆虐、物种减少……正严重威胁着人类自身的生存。人们重新审视人与自然的关系，认识到自然是人类的朋友，人和自然应该和谐相处，强调保护环境，走可持续发展之路。运用所学哲学知识说明人与自然为什么要和谐相处？
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举一反三
【单选题】After formation of replication fork
A.
Both the new strands are synthesized discontinuously
B.
One strand is synthesized continuously and the other discontinuously
C.
Both the new strands are synthesized continuously
D.
RNA primer is required only for the synthesis of one new strand
【单选题】In the process of meiosis,DNA replication of each chromosome occurs,form ing a structure consisting of two sister chromatids attached to a single centromere.What is this structure?
A.
A duplicated chromosome
B.
Two chromosomes
C.
A synapsed chromosome
D.
A crossover chromosome
【单选题】已知某计算机 CPU 的外频为 133MHz ,其主板上倍频跳线在 6 的位置上,则该计算机的主频为()
A.
800MHz
B.
700MHz
C.
900MHz
D.
600MHz
【单选题】Which are features of nuclear division by mitosis? 1. forms cells of equal size to the parent cell 2. forms genetically identical cells 3. semi-conservative replication of DNA
A.
1 and 2 only
B.
2 and 3 only
C.
2 only
D.
1, 2 and 3
【简答题】听录音，选择正确的图片，将其序号填入题前括号里。 ( ) 1. What day is it today? ( ) 2. What's your favourite food? ( ) 3. What do you do on Sundays? ( ) 4. What's your English teacher like? ( ) 5. What woul...
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