题干

已知数列{an}的首项a1=1,且an+1=
a
n
2
a
n
+
1
(n∈N*).
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同类题2

阅读下面短文,并根据所读内容,在空格里填入一个最适当的词。

    We often see top students around us and everyone knows about them. Let us take Jenny as an example. She is the monitor of our class. She spends a lot of time working for our class. But she always gets good grades in all subjects. How do students like Jenny do that? When I asked her, she said, "Hard work is not the whole story. It's not how long you sit at the desk with your books open. It's what you do as you are sitting." In fact, we can see many top students spend fewer hours on their studies than their classmates. Jenny gave me some valuable suggestions.

    If your math teacher gives you five exercises, you should do six. If your Chinese teacher gives eight pages of reading, you should read nine. The more you practice, the more you learn.

    Studying is a matter of your personal interest, so choose the way you are most comfortable with. Some people like working at night when the house is quiet, while others like doing their work early in the morning. However, others like studying as soon asthey arrive home from school while the work is fresh in their minds. No matter(无论) which way suits you, try to do your best.

    Studying is your business and the business comes before entertainment(娱乐). When you are studying, phone calls should go unanswered, TV shows unwatched, snacks given up. Studying is the only thing in your mind. Nothing can pull your attention away from what you are studying.

    Studying is like eating. You should eat a little at a time. You can plan what to do today, but don't do too much. When you can't finish the work you planned to do, you will feel stressed and may lose confidence. On the other hand, you will not study well without a good plan. It all depends on how you manage your time.

    The students who hand in a clearly written paper are already half way to get an A. Tidy papers are likely to get higher marks than messy(乱糟糟的) ones. When you write clearly and do your work carefully, the thoughts in your mind are clear. You are able to make fewer mistakes.

____ on making your studies better

Passage outline

Supporting details

Do more than you are asked

Do more than what your teacher asks you to because ____ makes you learn more.

Choose suitable ways

Some people like working on a ____ night, while others like doing their work early in the morning. Some people like studying their lessons shortly after ____ home from school.

Put studying____entertainment

Pay ____ to what you are studying.

Plan your time well

Don't try to do much at a time.

Failing to finish your planned task will make you feel stressed and become less ____.

On the other hand, you will not study well without a good plan.

Keep your papers____

Messy papers are more likely to get ____ marks than clearly written ones.

Besides, some mistakes can be ____.

同类题3

完形填空

 The song that has meant the most to me since I was the age of five,watching the movie Space Jam,is called “I Believe I Can Fly” by R.Kelly. Every time I listen to the song,it1methat as long as I believe,Ican be or do2I want in life even with a disability.

        I didn’t know much of what the song3a long time ago but as I grew older,Istill loved the song and started to listen to the4more and more.Every time I listen to it,Ithink about all the obstacles I have5.

       When I was little,Ihad to6a wheelchair because I have a disability.The doctors told mymother I had a slim7of ever walking but I was8to walkbecause I disliked that wheelchair.I knew that I had to believe in myself to9mygoal to walk someday.

       One day the doctor told my mother that he could make a(n)10that wouldhelp me walk.11when I was seven and one­half,I had my first surgery.

       I12the cast because it was a half body cast,witha bar in the middle of my legs.I was a very13kid so being in a bedfor six weeks,notbeing able to move,Ifelt horrible.I knew after all the14and the crying it would beworth15it in the long run.

16,at the age of eight,I got my cast off.I felt free when Ifinally17all the therapy (治疗)and learned how to18.

       The song19,“Isee me running through that open door.” That’s what I felt like.Like the songsays,“Thereare miracles in life I must achieve,butfirst I know it starts inside of me,oh...”I am one of the20in life.