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

Modern life is 1 without traveling. The 2 way of traveling is by air. With a modern airline you can travel in one day to places. But it 3 a month or more to get to these places a hundred years ago.

Traveling by train is 4 than by air , but it has its advantages(便利). You can see the country you are traveling through. Modern trains have comfortable seats and dining cars. They make even the longest journey(旅程) 5 .

Some people 6 travel by sea if it is possible. There are large liners and river boats. You can visit many other countries and different places. Traveling by sea is a very 7 way to 8 a holiday.

Many people like to travel by 9 . You can make your 10 timetable. You can travel three or four hundred miles or only fifty or one hundred miles a day, just 11 you like. You can stop 12 you wish—where there is something interesting to see, at a good restaurant where you can 13 a good meal, or at a hotel to spend the night. That is 14 traveling by car is popular for pleasure trips, while people usually take a train or a plane when they are traveling 15 business.

( ) 1. A. impossible　　　　 B. possible　　　　 C. good　　　　 D. bad

( ) 2. A. fastest　　　　　　 B. faster　　　　　 C. slowest　　　 D. slower

( ) 3. A. spend　　　　　　 B. took　　　　　 C. cost　　 　　　D. worth

( ) 4. A. faster　　　　　　 B. fast　　　　　　 C. slower　　　　 D. slow

( ) 5. A. enjoy　　　　　　 B. harmful　　　　 C. enjoyable　　　 D. tired

( ) 6. A. prefer to　　　　　 B. prefer　　　　　 C. prefers　　　 D. prefers to

( ) 7. A. pleased　　　　　 B. pleasure　　　　 C. pleasant　　　 D. please

( ) 8. A. take　　　　　　 B. spend　　　　　 C. cost　　　　 D. visit

( ) 9. A. jeep　　　　　　 B. truck　　　　　 C. car　　　　　 D. bike

( ) 10. A. owns　　　　　　 B. own’s　　　　　 C. owns’　　　　 D. own

( ) 11. A. to　　　　　　　 B. from　　　　　　 C. as　　　　　 D. with

( ) 12. A. whatever　　　　 B. wherever　　　　 C. however　　 D. whichever

( ) 13. A. enjoy　　　　　　 B. like　　　　　　 C. love　 　　　D. eat

( ) 14. A. what　　　　　　 B. why　　　　　　 C. where　　　　 D. which

( ) 15. A. in　　　　　　　 B. with　　　　　　 C. for　　　　　 D. on