The computer plays an important part in our everyday life. It is one of the great __1__ in the world in the __2__ century. It works for us not only at home, in the offices, in big shops, __3__ at schools. Today it is used __4__ many ways. It really __5__ the world large wealth (财富) and happiness.
　　The first computer in the world was __6__ Enid. It was built in America in 1946. It was __7__ and heavy. __8__ it was born, it has been developing very fast. Until now it has gone __9__ four periods（时期，阶段）and changed a lot. There’re many kinds of computers. Computers are getting smaller and smaller and computing faster and faster. It becomes more and more __10__.
　　The computer can do most of the things __11__ the people. It can help us to __12__ about the real world more quickly, to learn __13__ we want to learn and to think __14__ ourselves. __15__ a student in the twenty-first century, you must work hard at it.

　　1. A. inventions     B. discoveries C. robots               D. inventors
　　2. A. twenty-first   B. twenties   C. twelfth      D. twentieth
　　3. A. also             B. but also     C. too            D. either
　　4. A. in              B. to             C. by             D. over
　　5. A. takes            B. helps         C. gets           D. brings
　　6. A. found           B. invented     C. called       D. bought
　　7. A. easy             B. small         C. large         D. light
　　8. A. For              B. Until         C. When      D. Since
　　9. A. by                B. across      C. through     D. against
　　10.A. serious         B. harmful.    C. dangerous D. helpful
　　11.A. for             B. to             C. at              D. with
　　12.A. set              B. tell         C. know               D. talk
　　13.A. what            B. that           C. which        D. who
　　14.A. of               B. about        C. out            D. for
　　15.A. For             B. Be            C. As             D. To

请用适当的词完成这篇短文，每个空只需填写一个形式正确、意义相符的英语单词。请将答案写在答题卷相应题目的答题位置上。

Liu Yiting is from Chengdu, China. In 1996, she 　71　 to Chengdu Foreign Language

School. After she finished 　72　at that school, she went to Harvard University in 1999. She was only eighteen 　73　old at that time. The university is in America and is one of the 　74　 famous university in the world. She became one of the first Chinese students to go Harvard University with a full scholarship. In 2003, she finished studying at Harvard University and began

to 　75　 in America. After that, she set 　76　

the Liu Yiting After-class Activity Prize at Chengdu Foreign Language School. The prize is to reward those students who do 　77　 in after-class activities.

Her mother wrote a 　78　called Harvard Girl Liu Yiting. The book shows how the girl studied and became successful. It is very popular 　79　 many children and their parents. Both parents 　80　children can get a lot from this book.