何为逆转录？有何生物学意义？

If you are hungry, what do you do? Have your favorite meal and stay quiet after that?  59  But it never lets you know, because you keep it busy thinking about your friends or favorite stars．So it silently serves your needs and never lets itself grow．When mind loses its freedom to grow, creativity gets a full stop．This might be the reason why we all sometimes think "What happens next?", "Why can't I think?"

  60  Why reading but not watching TV? It is because reading has been the most educative tool used by us right from childhood．Since it develops other aspects of our life, we have to get help from reading．

Once you read a book, you run your eyes through the lines and your mind tries to explain something to you．  61 Now this seed is unknowingly used by you to develop new ideas．If it is used many times, the same seed can give you great help to relate a lot of things which you would have never thought of in your wildest dreams!

This is nothing but creativity．  62  Within no time you can start talking with your friends in English or any other language and never run out of the right words．

So guys, do give food for your thoughts by reading, reading and more reading．  63 Go and get a book!

A．The interesting part of the book is stored in your mind as a seed．

B．Why not do some reading while you are hungry?

C．Just like your stomach, your mind is also hungry．

D．Now what are you waiting for? E．Hunger of the mind can be actually solved through wide reading．

F．Reading can help you make more friends, too．

G．Also this makes a significant contribution to your vocabulary．

Simon：我们仍不知道机器是否能够思考。计算机能够执行非常复杂的任务但是却缺乏人类智慧的灵活特性。
Roberta：我们不需要更复杂的计算机来弄清机器是否能够思考，我们人类就是机器，而我们可以思考。
Roberta对Simon的回应基于对哪个词的重新解释

A．计算机

B．知道

C．机器

D．复杂的

习 * * 在中阿合作论坛第六届部长级会议开幕式上讲话指出：实现民族振兴的共同使命和挑战，需要我们弘扬丝绸之路精神。弘扬丝路精神，就是要促进文明互鉴，倡导文明宽容，防止极端势力和思想在不同文明之间制造断层线；就是要尊重道路选择，一个国家发展道路合不合适，只有这个国家的人民才最有发言权；就是要坚持合作共赢，中国追求的是共同发展。我们既要让自己过得好，也要让别人过得好；就是要倡导对话和平，中国将以建设性姿态参与地区事务，主持公道、伸张正义，推动通过对话找到各方关切的最大公约数。

结合材料回答

⑴弘扬丝路精神体现了我国外交政策的哪些内容？（9分）

⑵分析中国弘扬思路精神主张的政治意义。（5分）

诊断6～14岁的小儿反复呼吸道感染，其中1年上呼吸道感染的次数是（）

A.5

B.6

C.7

D.8

E.9

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