设数列{an}的首项a1∈(0,1),an+1=3-an2(n∈N+)(I)求{

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问题:

设数列{an}的首项a1∈(0,1),an+1=
3-an
2
(n∈N+
(I)求{an}的通项公式;
(II)设bn=an
3-2an
,判断数列{bn}的单调性,并证明你的结论.
考点:数列的概念及简单表示法
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I’m a real book lover. Every time my friends visit me, my nose is buried in a book. Wherever I go, I always have a book with me. Novels, history books, stories about people, journals and news—I read them all and I’ve learnt a lot, too. For example, many things in life happen for the best even if we don’t like or understand them.

Why is reading such an enjoyable pastime for me? I probably first learned about it from my parents. My mother read to me at night in my childhood and bought me picture books. The greatest gift she has given me is a love for reading. And it will be a life-long habit.

No one ever asked me why I liked to read. They just saw me and asked, “Oh? Is that for school work?” And I just shook my head, “No. It’s just for fun.” While reading a good book, I can totally forget myself and fly to another world. It’s like exploring through someone’s eyes, which is just as exciting as watching a movie.

Reading is also necessary in order to learn about writing, to improve my use of words and phrases and broaden my knowledge. What a pity to see our imagination disappear, for we don’t exercise it often. Reading can even be good for one’s health, I think. Everyone should read sad stories that make us cry and also books with humor that make us laugh out loud!

小题1:. Among the gifts my parents have given me, which is the most valuable one?

A.A love for reading.

B.Picture books.

C.Good health.

D.A lovable pastime.小题2:. In the fourth paragraph, the author thinks reading can ____.

A.make his parents happy

B.finish his school work

C.improve writing and broaden knowledge

D.help him understand some movies小题3:. If we don’t use our imagination often, ____.

A.it is bad for our health

B.we will soon learn how to write

C.it will help us to have a good rest

D.it will soon disappear小题4:. What does the passage mainly talk about?

A.Why do I have few friends?

B.What are my life habits?

C.Why do I love reading?

D.Why do things happen for the best?

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越流补给

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士官、政府专职消防员正式党员较多的中队,应有()参加支部委员会。

A、士官

B、政府专职消防员党员

C、地方政府领导

D、支队司令部领导

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()是一种代办国际运输、仓储、通关等业务的形式。

A.国际报关

B.国际货代

C.国际承运

D.国际物流

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焦油加工的主要任务是获得酚、萘、蒽等纯产品和()等粗产品。

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